Languages can provide us with a great deal of knowledge about a society’s culture, way of life, evolution, and even migration patterns. They give us a profound insight into the minds of ancient peoples and let us piece together humanity’s distant past. Yet some discoveries flip the script, presenting the unnerving truth that parts of our heritage may remain forever shrouded in mystery.

Why Ancient Languages Still Captivate Researchers

Every time scholars crack a fragment of an ancient tongue, they open a window onto a world long vanished. But when the window refuses to open, the intrigue only deepens, and the quest to understand these enigmatic ancient languages becomes a thrilling detective story.

10 North Picene

North Picene was spoken by the Picentes tribe in northeastern Italy during the first millennium BC. While its southern sibling, South Picene, fits neatly into the Italic family, the northern variant stubbornly defies classification. Scholars can’t agree on its linguistic family, and its grammar remains a baffling puzzle.

The surviving inscriptions were uncovered on a stele near the tiny town of Novilara. They were carved in a script that looks Etruscan‑ish but sprinkles in a few Greek letters for certain consonants. Despite decades of study, the language’s structure and origins remain a mystery.

9 Etruscan

Etruscan was the voice of the once‑powerful civilization that flourished in what is now Tuscany before Rome rose to dominance. Their sophisticated culture left a lasting imprint on the Western Mediterranean, yet most of what we know comes from Roman writers who were, frankly, a bit biased.

The language is a classic isolate—no clear relatives anywhere on the linguistic map. It boasts a complex system of inflections and a dizzying number of grammatical cases. Some researchers suggest it may belong to a hypothesized Tyrrhenian family, but the evidence is far from conclusive.

8 Basque

Basque is spoken by the Basque people in northern Spain and southwestern France. Linguists have tried for centuries to link it to other tongues, but every study confirms that it stands alone—no known relatives anywhere.

What makes Basque truly remarkable is that it survived the Roman conquest while other pre‑Roman Iberian languages vanished. Its living status offers a rare glimpse into the linguistic diversity that once dotted the Iberian Peninsula.

7 Sumerian

Widely regarded as the world’s first written language, Sumerian thrived in Mesopotamia during the second millennium BC. Its script—cuneiform—consists of stylized wedges that represent ideas rather than phonetic sounds.

Even today, only a few hundred specialists can read Sumerian fluently. Its agglutinative nature means words are built by stacking suffixes onto a core, creating long, expressive forms. Yet the language’s origins remain a hotly debated mystery.

6 Ainu

The Ainu people of Hokkaido—Japan’s northernmost island—trace their roots back to the Jōmon hunter‑gatherers who arrived around 14,500 BC. Their language is a cultural outlier, completely distinct from Japanese.

Today, Ainu is critically endangered, spoken by only a handful of elders. It never developed a native script; instead, it was historically transcribed using Japanese kana, which complicates preservation efforts.

5 Sicel Language

On Sicily, the ancient Siculi tribe once spoke an Indo‑European language that remains unverified due to scant evidence. Their origins may lie in Liguria or Latium, but the lack of inscriptions makes any firm conclusion impossible.

The Siculi cultivated a rich culture of cults and deities before Hellenic influence swept the island. Greek writing was eventually introduced, but only a few Sicel inscriptions have survived the ages.

4 Vinca

The hypothetical Vinca language—sometimes called “Old European”—is inferred from mysterious symbols found on artifacts in southeastern Europe. These markings may predate both Sumerian cuneiform and Egyptian hieroglyphs by millennia.

Excavations along the Danube in present‑day western Romania uncovered the symbols, dating from roughly 6000‑3000 BC. Because only brief inscriptions exist, scholars doubt they’ll ever decode a complete Vinca lexicon.

3 Hurrian

Hurrian flourished in the Hittite‑dominated lands of ancient Mesopotamia and Anatolia during the second millennium BC. Its speakers likely migrated from the Armenian highlands, eventually establishing the Mitanni kingdom before the Assyrians took over.

Although classified as an isolate, some scholars have spotted Indo‑European‑like traits, sparking lively debate over its true lineage.

2 Elamite

Elamite coexisted with Sumerian and Akkadian in ancient Mesopotamia, yet it remains a language isolate. Early texts used a pictographic script before switching to Sumerian cuneiform.

Its agglutinative structure mirrors many ancient tongues: suffixes attach to nouns, verbs, and pronouns to convey nuanced meaning. Elamite follows a Subject‑Object‑Verb order, often placing the verb at the very end of sentences.

1 Raetic

Raetic was spoken by the Raeti people inhabiting the Eastern Alps of modern northern Italy and western Austria around 500 BC.

Scholars propose three main theories: it may belong to a Tyrrhenian family alongside Etruscan and Lemnian; it could be an independent Indo‑European branch; or it might simply be a language isolate with Etruscan influence. The true origins may never be settled.

Outsiders need a way to communicate with each other in secret. It is essential to their survival. The exact number of “cryptolects”—secret languages known only to the initiated—is unknown, but many have influenced popular vocabulary. Make no mistake: Outlaws move the mainstream. This article explores the 10 secret outlaw languages that have shaped hidden societies across the globe.

The 10 Secret Outlaw Languages Explained

10 Polari

The origins of this UK cryptolect are shrouded in mystery. One theory is that British sailors crafted this tongue by combining the Mediterranean lingua franca with local slang. Others claim it began as the jargon of 19th-century Italian carnies. What everyone agrees on is that Polari became the insider dialect of English theater. From the stage, it became a secret code among British homosexuals. Given that homosexuality was illegal in England until 1967, by any definition, Polari is an outlaw language.

BBC Radio introduced Polari to the masses in the 1960s with a flamboyant comedy duo named Julian and Sandy, who frequently lapsed into the language. The couple never discussed sexual orientation, but they didn’t need to. Polari was a “wink” to those in the know.

Polari is rarely spoken today, but it does occasionally find its way into art. Morrissey’s 1990 single “Piccadilly Palare” explicitly references the cryptolect. The alternative spelling of “Palare” reflects that there is no proper way to write Polari. This is a spoken language.

Polari is not the only cryptolect associated with gay subculture in the Anglo world. Gayle is an Afrikaans-based dialect used principally by English-speaking urban homosexual men in South Africa. Given the connection between South Africa and the UK, it is not surprising that many Polari words have found their way into Gayle. South Africa boasts a second cryptolect for homosexual Bantu speakers called IsiNgqumo. While gay rights are protected under the South African constitution, the murder of homosexual men and “corrective rape” of lesbians reveals a powerful need for these societal outsiders to communicate in secret.

9 Hobo Hieroglyphics

Hobos appeared on the American scene after the Civil War when itinerant men took to the rails in search of work. The phenomenon reached peak numbers during the Great Depression, when the dispossessed flooded hobo “jungles.” These men led nomadic existences, taking odd jobs no one else wanted. They were admired, pitied, feared, and idolized. Author John Steinbeck called them “the last free men.”

In order to exchange information, hobos developed a language of coded symbols. These hieroglyphics signified danger, opportunity, and even nuanced recommendations such as “food for religious talk.” The signs are intentionally abstract so that they could be written out in the open without fear of being deciphered by non-hobos. This cryptic language proved essential to hobo survival in the unforgiving world of train-hopping.

Hobos are rare today, since train companies have tightened their security. Those who remain are frequently lambasted as “showbos”—that is, interested in exploiting the lifestyle for its pageantry in festivals rather than embracing the cold, hard reality of life on the rails. As the hobo phenomenon fades, so does the usage of their coded language, yet these symbols still resonate deeply. Hobo hieroglyphics inspired painter Jean-Michel Basquiat, who counted a dictionary of these symbols among his favorite books. He incorporated their imagery and poetry (“nothing to be gained here”) into his compositions.

8 Lunfardo

Lunfardo originated in the Buenos Aires underworld as a secret language to confound outsiders. With time, this cryptolect emerged from prisons and criminal dens to become the definitive Buenos Aires dialect, cutting across class lines and oozing across borders. To some linguistic formalists, Lunfardo is an embarrassment—a lowbrow, delinquent-tinged slang best avoided by the well-heeled. To others, this mainstream cryptolect defines Argentinian culture.

Lunfardo has a gigantic vocabulary, with contributions from many languages beyond its Spanish core. Northern Italian dialects are well represented, plus additions from English, French, and Gypsy tongues. Much of the vocabulary is of unknown origin. Linguists suspect pure invention.

Several features distinguish Lunfardo. “Verse” masks standard words by rearranging syllables, and metaphor abounds. There are countless terms for categories of criminals, their prey, and shady activities. Lunfardo is a sensual language that is laden with words for men, women, and body parts. It should come as no surprise that it is the lingua franca of tango, and even fluent Spanish speakers have trouble decoding the genre’s lyrics without knowledge of Lunfardo. The popularity of this music has spread this once-secret language around the globe.

7 Peddler’s French

In 1567, Thomas Harman made the first known reference to Peddler’s French (aka Thieves Cant) in A Caveat or Warning for Common Curestors, Vuglarly Called Vagabonds. This coded vernacular was the secret language of the British underworld, a lingua franca among thieves, tramps, and beggars.

“French” does not imply that it comes from the land of the Gauls but that it is foreign. Its origins are unclear. Some, like Harman, suggest a Romani pedigree. The most colorful origin story is that the secret code was created by none other than the King of the Gypsies at a cave called The Devil’s Arse. Others suggest Romani origins are impossible, given that the language was spoken 50 years prior to the arrival of the Romani in England. Regardless, there is no doubt the language has been influenced by the nomadic tongues of Northern India.

The term “peddler” has criminal overtones in England. Independent merchants, once known as “peddlers,” were prosecuted in order to ensure a crown‑approved monopoly. Roving merchants’ overhead was lower than rooted shopkeepers, whom they were able to undersell. The authorities couldn’t stand for this unauthorized competition, so the peddlers were officially classified as “rogues.”

The idea that this cant is a language separate from English is not entirely accurate. Instead, it exchanges words and expressions with coded alternatives to confound outsiders. It would be more accurate to refer to it as a nuanced slang with a giant, labyrinthine vocabulary.

Reports indicate that this language is still used in UK prisons. This coded terminology is used in contraband smuggling today for exactly the same reason it was employed in Thomas Harman’s day. Correctional officers have seized correspondence referring to drugs by their Thieves Cant translation.

6 Russian Criminal Tattoos

Tattoos have been with us from the dawn of history. The oldest European mummy, Otzi, had tattoos, and Egyptian funerary figures bear body art. Romans banned tattoos, believing they sullied the harmony of the human body. However, when they fought inked‑up Britons, their story changed, and Roman doctors soon mastered the art. Crusaders’ tattoos signified they were Christian, with the implicit request for a proper burial should they fall on the battlefield. After the Crusades, they vanished from the West until the 18th century, when sailors brought tattoos back from the South Seas. In 1769, Captain James Cook landed on Tahiti, the practice was in full swing. The modern term for the art comes from the Tahitian word tatau.

Tattoos are now omnipresent. Whether they are fashion accessories, status symbols, or subculture beacons, all inking has symbolic meaning. However, no group of body modifications has more symbolism than Russian criminal tattoos under the Soviet regime.

Soviet authorities forbade tattooing in prison, so radical techniques were used to circumvent restrictions. Melted boot heels mixed with blood and urine served as ink, while needles were made from whatever sharp object was available. Fatalism runs through the story of Russian criminal tattoos, as many knew they were in for life and didn’t care about consequences.

Our knowledge of this secret language comes from Danzig Baldaev, a corrections officer at Kresty, the notorious Leningrad prison. Once the KGB discovered Baldaev’s work, they officially sanctioned the project, realizing that it could provide invaluable information about this criminal subculture. Published after his death, Baldaev’s work can now be found in the Encyclopedia of Russian Criminal Tattoos. Baldaev revealed many secrets of this symbolic language: A cat tattoo signified a thief, crosses on the knuckles indicated number of prison stints, a penis on a female revealed she was a prostitute, and a shoulder tattoo meant the bearer had spent time in solitary confinement. The most popular tattoo themes were “grins,” images of Soviet leaders in ridiculous and compromising positions that served as a “middle finger” to the authorities.

In Soviet‑era prisons, a lack of inking signified a lack of status. But even worse than no tattoos was the heart inside a white triangle, which was the sign of a child rapist. This scarlet letter made the bearer an “untouchable” and totally at the whims of other prisoners’ sexual appetites.

5 Machaj Juyai

The itinerant traditional healers of the Bolivian Andes are known as the Kallawaya. Their medical knowledge is passed from father to son in practitioner families through a secret language called Machaj Juyai. The origins of the tongue are subject to debate. Some believe it to be the language of Incan kings. Others link it to Amazonian dialects, suggesting that Kallawaya travel deep into the jungle in search of medicine.

The Kallawaya performed successful brain surgery on Incan warriors and introduced quinine to the West, preventing malaria deaths during the construction of the Panama Canal. Despite the Kallawaya’s track record, the church and Bolivian state prosecuted these healers well into the 20th century. Until 1984, when Bolivia officially recognized traditional medicine, these skilled healers and their secret language were forced underground. During these dark days, the Kallawaya were considered witches and risked imprisonment for practicing their art. Machaj Juyai became a true outlaw language.

Some 400 years after the fall of the Incan empire, the Kallawaya still have their secret language. Today, even after the dark days of persecution, the demand for their services vastly outweighs the supply. Rapid urbanization has broken the line of tradition among the hereditary healers, and sons no longer learn the art and secret language of healing from their fathers. The tradition of Kallawaya is fading rapidly, just as pharmaceutical companies are beginning to take an interest in their stores of accumulated knowledge, but the secrets of Machaj Juyai prevent unscrupulous bio‑prospecting. Outsiders cannot access the millennia‑worth of healing wisdom from the Kallawaya without their approval—and compensation.

4 Los Angeles Gang Graffiti

Gang graffiti in Los Angeles is not random vandalism. To those who know how to decipher the secret language, these markings are the “newspaper of the street.” They reflect territorial boundaries, rivalries, and allegiances. Law enforcement officers have even used the secret messages to solve crimes.

Often the names of the gangs themselves are shrouded in code. The monikers are often written abbreviated, such as “ES DKS SGV” for the Eastside Dukes of the San Gabriel Valley. In some cases, gangs have disguised their names by using Roman or even Mayan numbers.

Gang graffiti began in Los Angeles with the emergence of Latino factions over 70 years ago. Initially, it was simply a way of glorifying the organization and marking “turf.” Black gangs quickly contributed to the language. The ‘70s and ‘80s saw the peak of the gang graffiti movement in Los Angeles.

There is a marked difference between gang graffiti and the work of taggers. The latter also engage in a coded language of vandalism, but theirs is based more in outsider art than the criminal underworld. However, differentiation is complicated by the fact that taggers often paint on gang‑controlled walls, and city authorities have recently used gang injunctions against tagging crews. To those fluent in the visual cryptolect of L.A. gangs, though, they are worlds apart.

3 Parlache

Parlache is a Colombian criminal dialect that was born on the streets of Medellin in the 1980s. Poor urban planning, social unrest, and a failing education system plagued Medellin. Young impoverished men from the countryside flocked to the city and discovered that cocaine was the biggest business in town. This marginalized working class became the cartel’s foot soldiers.

This is not a language of the drug lords. Parlache is the cryptolect of youths in the streets, who needed a coded tongue to cover up sensitive information in their high‑risk daily operations. Common features of Parlache include foreign words and giving old words new meaning. For example, the meaning of cocina shifted from “kitchen” to “drug lab.” The innocuous translation of “office” morphed into “a criminal organization in which the orders are passed on from one person to the next so it’s unknown who is directly responsible.” Analysis of the language has been instrumental to law enforcement, who relied on linguistics experts’ work on Parlache to decipher the previously untranslated slang being used by Colombian drug cartels operating within the Iberian Peninsula.

Parlache has become the definitive Colombian dialect, both spoken and written. Parlache words entered the mass media of several Latin American countries and even found a home in the Real Academia Español (RAE) dictionary in Spain. Despite widespread acceptance, though, Parlache remains a stigmatized tongue. Its criminal origins are most loathsome to Parlache speakers who move up the social ladder, who often go out of their way to shed this linguistic echo of a delinquent past. To others, it remains the secret code of a marginalized population that fosters self‑determination, playfulness, and solidarity.

2 The Da Pinchi Code

Thieves in the UK are using a visual cryptolect to convey information about which houses are worth breaking into. First spotted in Surrey in 2009, the code has since been found throughout England. Often found on pavement in front of the home, the chalked symbols look like the work of a child, but they carry sinister meaning. One such symbol, for example, denotes the presence of a “vulnerable female.” The code also includes symbols that mean “alarmed,” “nervous” or “afraid,” “burgled before,” “good target,” “too risky,” “nothing worth stealing,” and “wealthy.” Police around England have issued warnings to householders and provided pamphlets with translations. They have advised citizens who spot the code to take photos, report the incident, and wipe off the markings.

Their primary concern is that criminals are becoming organized, but in reality, it’s too late. Experts believe that shining a light on this system will stop thieves from using the code, as a secret language is only effective as long as it remains a secret. Undoubtedly, the thieves are already onto a new cryptolect.

1 The Aryan Brotherhood Cipher

The Aryan Brotherhood is one of America’s most feared prison gangs. Despite having less than 100 official members, they run drug dealing and gambling operations in prisons nationwide. What they lack in numbers, they make up for in extreme violence and terror. Many of their top brass are housed in solitary confinement in maximum security prisons, so they have found elaborate means to communicate with each other. Some of these techniques are surprisingly ancient. T.D. Bingham, one of the Aryan Brotherhood’s leaders, ordered an execution from behind the razor wire of the most secure prison in the nation using a 400‑year‑old binary cipher code written in invisible ink. His victim was in another high security prison over 2,700 kilometers (1,700 mi) away.

The code was developed by Sir Francis Bacon and used by spies in George Washington’s Revolutionary Army. The invisible ink technique was first referenced by Pliny the Elder over 2,000 years ago and is remarkably low‑tech: writing in urine or citrus juice on plain paper. The message will remain invisible until direct heat is applied. The simplicity of the technique blindsided law enforcement.

The Baconian code is a bilateral cipher containing two alphabets. One is regular, but the other alphabet contains crosses, tails, and loops at the bottom of letters. These alphabets combine to form five‑letter sequences that translate into individual letters.

Jonathan McGinley served as the Aryan brotherhood’s code master. He was dubbed the gang’s Intelligence and Security Director and is responsible for introducing the secret language to top Brotherhood leadership. His interest in ciphers started when he was young, prospecting for decoder rings in cereal boxes. Another simple but effective technique McGinley employed to send messages within his maximum security prison was circling letters in library books his co‑conspirators would later check out.

The brotherhood guards its secrets. It threatens death to those who even admit they are members, so what little we know comes from defectors. However, there is evidence to suggest that not all defectors have been honest. Many claim their defections were a ruse to gain privileges not afforded to other prisoners. As a result, our entire view of this organization might need to be reconsidered.

Abraham Rinquist is the Executive Director of the Winooski, Vermont branch of the Helen Hartness Flanders Folklore Society. He is co‑author of Codex Exotica and Song‑Catcher: The Adventures of Blackwater Jukebox.

Welcome to our top 10 most spoken languages roundup! Language is the ultimate superpower – it feeds us as kids, powers our careers as adults, and fuels endless entertainment through books, music, film, and more. Below you’ll find a lively, rank‑ordered guide that takes you from French’s romantic flair all the way up to Mandarin’s billion‑plus speakers.

Why These Are the Top 10 Most Spoken Languages

10. French

Number of speakers: 129 million

Often crowned the world’s most romantic tongue, French rolls out across continents – from Belgium and Canada to Rwanda, Cameroon, Haiti, and, of course, France itself. We’re lucky to have French in our linguistic pantry; without it we might be stuck with Dutch toast, Dutch fries, and Dutch kissing – yikes!

To greet a French speaker, simply say “Bonjour” (bone‑JOOR).

9. Malay‑Indonesian

Number of speakers: 159 million

Malay‑Indonesian lives in Malaysia and Indonesia. We tweaked the numbers a bit because the language splinters into many dialects, with Indonesian being the most prominent. Still, they all trace back to the same linguistic root, earning it the ninth spot on our list.

Indonesia, a sprawling archipelago of over 13,000 islands, ranks as the sixth‑most‑populated nation. Its neighbor Malaysia shares Borneo and boasts the bustling capital Kuala Lumpur.

To say hello in Indonesian, try “Selamat pagi” (se‑LA‑maht PA‑gee).

8. Portuguese

Number of speakers: 191 million

Think of Portuguese as the underdog that punched above its weight. After gaining independence in the 12th century, Portugal sent explorers like Vasco da Gama and Prince Henry the Navigator around the globe. Their voyages planted Portuguese in Brazil, Macau, Angola, Venezuela, Mozambique, and beyond.

When you meet a Portuguese speaker, greet them with “Bom dia” (bohn DEE‑ah).

7. Bengali

Number of speakers: 211 million

Bangladesh, home to over 120 million people, is a Bengali stronghold. The country’s proximity to India – a demographic juggernaut – means Bengali’s global footprint is larger than many anticipate.

To greet a Bengali speaker, say “Ei Je” (EYE‑jay).

6. Arabic

Number of speakers: 246 million

Arabic, one of the world’s oldest tongues, resonates across the Middle East – from Saudi Arabia and Kuwait to Iraq, Syria, Jordan, Lebanon, and Egypt. Its status as the language of the Qur’an also spreads its reach to Muslim communities worldwide. In 1974, Arabic earned a seat as the sixth official United Nations language.

Offer a warm Arabic hello with “Al salaam ‘alaykum” (Ahl sah‑LAHM ah‑ah‑LAY‑koom).

5. Russian

Number of speakers: 277 million

From Mikhail Gorbachev to Boris Yeltsin and Yakov Smirnoff, Russian speakers span the globe. Once seen as Cold‑War rivals, many now view Russian speakers as friendly neighbors. Russian holds a spot among the six UN languages and echoes through Belarus, Kazakhstan, and even pockets of the United States.

To say hello in Russian, try “Zdravstvuite” (ZDRAST‑vet‑yah).

4. Spanish

Number of speakers: 392 million

Beyond the high‑school classroom, Spanish thrives across South and Central America, Spain, Cuba, and the United States. Its influence permeates English, gifting us words like tornado, bonanza, patio, quesadilla, enchilada, and the ever‑popular taco grande supreme.

Give a Spanish speaker a friendly “Hola” (OH‑la).

3. Hindustani

Number of speakers: 497 million

Hindustani dominates India’s bustling populace, embracing a kaleidoscope of dialects, the most widespread being Hindi. While India’s population may soon outpace China’s, English’s foothold keeps Hindustani from usurping the world’s top spot. Want a taste of Hindi? Pop in an Indian movie – Bollywood churns out thousands of action, romance, and musical spectacles each year.

Offer a polite “Namaste” (Nah‑MAH‑stay) to greet Hindustani speakers.

2. English

Number of speakers: 508 million

English may not boast the highest speaker count, but it claims the crown for being the official language of the most countries. Its speakers span New Zealand, the United States, Australia, England, Zimbabwe, the Caribbean, Hong Kong, South Africa, Canada, and beyond. We could keep rambling, but you probably already feel at home with English.

When you want a playful greeting, try “What’s up, freak?” (watz‑UP‑freek).

1. Mandarin

Number of speakers: 1 billion+

Surprise! The most spoken language on the planet hails from the world’s most populated nation. Mandarin outpaces English by roughly a two‑to‑one margin. Don’t be fooled into thinking it’s a walk in the park – each word can be voiced in four distinct tones, and beginners often stumble over them. Yet if a billion people can master it, so can you.

Say hello in Mandarin with “Ni hao” (Nee HaOW), noting the tone dip‑then‑rise on “hao.”

Music lovers often assume that a hit song must be sung in the artist’s native tongue – after all, clear pronunciation and authentic expression are the bread and butter of pop success. Yet, every now and then, a legend decides to step outside that comfort zone, tackling a language they barely know. Below are 10 strange times when singers bravely (or bewilderingly) sang in languages they didn’t truly master.

10 Strange Times Unveiled

10 Paul McCartney In “Michelle”

Even though “Michelle” didn’t make its debut until the 1965 album Rubber Soul, the tune actually dates back to the Beatles’ earliest days. In this track Paul McCartney weaves English verses with a sprinkling of French phrases – the only French he really knew. The backstory reaches back to his teenage years, when the Quarrymen (the Beatles’ precursor) were invited to the hip art‑school gatherings that John Lennon’s friends threw. McCartney, eager to impress and attract the ladies, thought a dash of French would add a certain je ne sais quoi, especially since French crooner Sacha Distel was all the rage.

At the time McCartney didn’t actually speak French; he simply faked it. Donning a sleek black turtleneck, he strummed a melody that sounded French enough and sang a handful of made‑up French lines. Years later, after the Beatles skyrocketed to fame, Lennon recalled the tune and urged McCartney to flesh it out properly. Partnering with a friend who taught French, McCartney refined the song into the classic we now know as “Michelle.”

The result was a charming blend of English and French that still feels authentic, proving that a little daring (and a lot of phonetic guesswork) can produce a timeless hit.

9 Dave Mustaine In “A Tout le Monde”

Megadeth’s frontman Dave Mustaine might seem worlds apart from the Beatles, yet his 1995 anthem “A Tout le Monde” owes a linguistic nod to their French‑infused classic. Mustaine has explained that his choice to sing the chorus in French sprang from a personal love of the Beatles’ “Michelle,” his own French‑sounding surname, and a romance with a French‑speaking Canadian girlfriend. Determined to impress, he even began learning French during the relationship, hoping to nail the pronunciation.

Before settling on French, Mustaine experimented with several other tongues. He tried a Spanish rendition of the chorus, which he felt worked, but his attempts in German and Japanese were, by his own admission, “pretty horrific” and “abysmally” bad. Ultimately, French won out, giving the song a haunting, almost prayer‑like quality that resonates with fans worldwide.

8 John Lennon In “Across the Universe”

John Lennon’s lyrical genius often delved into the mystical, and “Across the Universe” is no exception. Amidst its dreamy verses lies a Sanskrit mantra – “Jai guru deva, om” – that Lennon claimed was handed to him, not authored by him. He described the phrase as flowing through him one night after a heated argument with his first wife, Yoko Ono.

The mantra translates roughly to “Victory to God Divine” or “I give thanks to Guru Dev,” referencing the teacher of Maharishi Mahesh Yogi, whose meditation teachings the Beatles were exploring at the time. While Lennon treasured the mantra’s spiritual weight, the Maharishi reportedly disapproved of its placement after the line “Nothing’s gonna change my world,” believing meditation should transform everything, not just the world’s surface.

7 Joe Strummer and Joe Ely In “Should I Stay or Should I Go”

The Clash’s 1982 classic “Should I Stay or Should I Go” is famous for its driving guitar riff, but few recall the spontaneous Spanish backing vocals that punctuate its bridge. Those vocals were delivered by The Clash’s own Joe Strummer and American country‑rock singer Joe Ely, added on a whim during the recording sessions.

According to Strummer, the idea sprang up suddenly in the studio, and the Spanish lyrics were translated over the phone by the mother of the tape‑operator. Strummer remembers her as Ecuadorian, while Ely later recalled the engineer’s mother being Puerto Rican. Regardless of the exact origin, the result was what Ely described as “the weirdest Spanish ever,” a quirky layer that added an unexpected cultural twist to a punk anthem.

6 Bananrama In “Aie a Mwana”

Before Bananarama became one of the 1980s’ most successful girl groups, they launched their career with a daring cover titled “Aie a Mwana,” sung entirely in Swahili. The choice of language was unusual for a British pop act, but the track was a reinterpretation of a song originally performed by the African group Black Blood, which the trio discovered in a French disco.

Unfamiliar with Swahili – a language spoken along the East African coast in nations such as Tanzania and Kenya – the girls learned the lyrics phonetically, memorizing the sounds without understanding the meaning. Though the single peaked only at number 92 on the UK chart, it caught the attention of influential figures like BBC DJ John Peel and Terry Hall of The Specials, catapulting Bananarama toward stardom.

5 Andy Ellison In “Whangdepootenawah”

The glam‑pop supergroup Jet, active briefly in the 1970s, released a track titled “Whangdepootenawah,” a word that sounds exotic and mysterious. The song’s lyrics were supplied by vocalist Andy Ellison, who, together with drummer Chris Townson and bassist Martin Gordon (formerly of Sparks), believed the term was witty and worth setting to music.

Years later, Gordon discovered that the peculiar phrase was lifted almost verbatim from Ambrose Bier C​e’s satirical Devil’s Dictionary. According to Bierce, “whang‑de‑poo‑ta‑na‑wah” supposedly originates from the Ojibwa language, meaning a sudden, disastrous affliction. Some scholars, however, suspect the word was entirely fabricated for the dictionary’s humor, adding another layer of intrigue to the song’s backstory.

4 Conway Twitty’s Russian Version of “Hello Darlin’”

Country legend Conway Twitty, a former U.S. Army serviceman who had been stationed in Japan, found himself again representing America during the Cold War’s tense 1975 era. Amid the geopolitical rivalry, the Apollo‑Soyuz joint space mission was announced, symbolizing a thaw between the United States and the Soviet Union.

During the historic 44‑hour docking of the American and Soviet spacecraft, astronauts exchanged music as part of the cultural goodwill effort. Twitty contributed by re‑recording his 1970 hit “Hello Darlin’” entirely in Russian, mastering the pronunciation phonetically to ensure the Soviet crew could enjoy a familiar American tune in their native tongue.

3 David Bowie In “Warszawa”

David Bowie’s fascination with Warsaw led to the creation of the atmospheric piece “Warszawa.” After two brief visits to the Polish capital in the mid‑1970s, Bowie discovered a choral fragment on an album by a local ensemble titled “Helokanie.” He felt the melody captured the yearning of a people living under communist rule.

Seeking a vocal line that would convey a sense of longing for freedom, Bowie incorporated the fragment into the instrumental track co‑produced by Brian Eno and Tony Visconti. Although listeners might assume the chant is Polish, Bowie actually sang a series of invented syllables, chosen for their emotional resonance rather than literal meaning.

2 David Byrne In “I Zimbra”

Talking Heads frontman David Byrne aimed to emulate African rhythmic textures on the opening track of the 1978 album Fear of Music. When the music proved resistant to conventional verse‑chorus structures, producer Brian Eno suggested borrowing a “poem without words” from avant‑garde poet Hugo Ball.

The selected piece, “Gadji Beri Bimba,” consists solely of nonsense syllables crafted in 1916. Byrne extracted the phrase “i zimbra” from its final line, adopting it as the song’s title. The result is a vibrant, word‑free anthem that captures the spirit of African chant without relying on actual lyrics.

1 Enya In “The River Sings”

Irish vocalist Enya, renowned for her ethereal soundscapes, has a history of singing in invented or obscure languages, from Latin to Elvish. When working on her 2005 album Amarantine, she sought a fresh linguistic texture for the track “The River Sings.”

Initially, Enya experimented with Gaelic, but felt the Celtic cadence clashed with the song’s melody. Her longtime lyricist Roma Ryan, meanwhile, was developing a brand‑new language she called “Loxian.” Ryan translated the lyrics into this crafted tongue, which then evolved with each subsequent song, giving Enya a unique vocal palette she would continue to explore in later releases.

Ever imagined yourself as a linguistic superhero, juggling dozens of tongues with ease? Maybe you already converse in multiple languages without breaking a sweat. But have you ever taken on any of the top 10 hardest languages that give even veteran polyglots a serious run for their money? Buckle up, because we’re about to explore the ten most daunting languages you could ever attempt to master.

10 Mandarin Chinese

Mandarin Chinese is a sprawling linguistic beast that can feel like an endless puzzle box. Before you even think about speaking it, you have to wrestle with its writing system—thousands of unique characters that either scramble your brain or become a meditative art form, depending on your mindset.

Once you’ve survived the character marathon, the spoken side throws its own curveballs. Grammar is a whole other universe: there are no articles, and sentence structures differ wildly from English, making sentence construction feel like assembling IKEA furniture without an instruction manual.

To top it all off, Mandarin relies on four distinct tones, each capable of flipping a word’s meaning entirely. One mis‑tone and you could accidentally call someone “ugly” when you meant “smelly”—a faux pas that’s more embarrassing than painful, but still unforgettable.

For this reason, many learners abandon generic language apps and seek out native tutors who can guide them through the tonal maze and character labyrinth.

9 Arabic

Arabic, a Semitic powerhouse spoken by over 400 million people across 26 nations, carries deep cultural and historical weight. Its sheer reach makes its difficulty all the more intriguing.

The main obstacle? Dialectal variety. Arabic splinters into a multitude of regional dialects, each with its own pronunciation quirks, vocabulary twists, and grammatical quirks, turning a single language into a patchwork of distinct tongues.

Writing adds another layer of complexity: you write from right to left, and each letter morphs depending on its position in a word. Vowels often hide in plain sight, making the script feel like a secret code. Then there’s the grammar—intricate verb forms and noun declensions that demand meticulous attention.

8 Japanese

Japanese earns its spot with a blend of visual elegance and cultural nuance. Over 128 million people speak it, primarily in the Land of the Rising Sun, and its writing system is a true work of art.

The script fuses Chinese characters (kanji) with two syllabaries—hiragana and katakana—requiring learners to master three distinct character sets. Memorization and context become your best allies when navigating this tri‑script system.

Beyond the script, Japanese flips the typical English sentence order on its head: verbs sit at the end, compelling you to adopt a Subject‑Object‑Verb pattern. Mastering this inversion takes practice, but it’s essential for sounding natural.

Finally, social context reigns supreme. Politeness levels and honorifics shift depending on the speaker’s relationship to the listener, so using the wrong form can instantly turn a friendly chat into an awkward misstep.

7 Korean

Korean may initially look like a cousin of Mandarin or Japanese, but it’s a language with its own unique flavor—think of it as a Texan meeting a Louisianan: familiar yet distinct.

1. Grammar

2. Homophones

3. Phonetic Writing

The grammar challenges stem from an unfamiliar word order, verb endings, and an honorific system that reshapes vocabulary based on social hierarchy. Double consonants, aspirated sounds, and complex vowel combinations can leave English speakers tongue‑tied.

Homophones are another stumbling block—words that sound identical but carry different meanings. A slip could have you saying “leg” when you meant “bridge,” or “fever” when you intended “ten.”

The Hangul alphabet, while phonetic, introduces a fresh set of characters that feel like learning to read and write all over again for those accustomed to the Latin script.

6 Finnish

Finnish is a linguistic rollercoaster famed for its mind‑bending grammar, a cascade of 15 cases, and a mesmerizing vowel‑harmony system that keeps learners on their toes.

Diving into Finnish grammar feels like solving a Rubik’s Cube of syntax: each case reshapes a word’s ending based on its role, while vowel harmony forces you to match vowel sounds within a word. Add in consonant gradation, and you’ve got a recipe for head‑spinning fun.

Finnish also loves to borrow and compound words, creating lengthy terms that look familiar yet behave in wildly unfamiliar ways. It’s a linguistic concussion—recognizable pieces stitched together in a puzzling fashion.

5 Hungarian

Hungarian stands out as a true linguistic labyrinth, offering a steep climb for any language enthusiast.

Being agglutinative, Hungarian lets you stack prefixes and suffixes onto a root like building a Jenga tower, creating words of astonishing length. Throw in a whopping 18 grammatical cases—far more than the three we use in English—and the challenge skyrockets.

Adding to the difficulty, Hungarian isn’t part of the Indo‑European family, so familiar cognates are scarce. Its exotic vowel and consonant sounds demand dedicated pronunciation practice, often lasting well into the night.

Success hinges on learning vocabulary within context and digging deep into the roots of Hungarian words to truly internalize their meaning.

4 Basque

Basque proudly claims the title of Europe’s oldest mysterious language, standing alone without any known relatives—making it an instant challenge for learners.

Because it has no linguistic cousins, you won’t find familiar cognates or recognizable word patterns to lean on. Instead, you must plunge into its complex agglutinative grammar, unique phonology, and a pronunciation system that can feel like decoding an alien dialect.

Mastering Basque could reward you with an unforgettable study‑abroad experience in the picturesque region straddling France and Spain.

3 Icelandic

Icelandic may be a tough nut to crack, but it’s also a living time capsule that preserves its Viking roots with fierce pride.

The core challenge lies in its grammar: four noun, adjective, and pronoun cases each come with their own declension rules, and irregular verbs add an extra layer of memorization.

Every noun carries its own declension pattern, shifting based on gender and case—requiring you to wield a tongue as sharp as Loki’s wit.

Vocabulary adds to the adventure, drawing from Old Norse, crafting compound words, and constantly inventing neologisms, making the lexicon feel like Odin’s treasure trove.

2 Polish

Polish grammar is a wild ride, featuring seven cases that reshape nouns, adjectives, and pronouns depending on their grammatical role.

Verbs can boast up to six tenses, while the language’s signature nasal vowels and dense consonant clusters turn pronunciation into a tongue‑twisting challenge.

Inflection weaves through nouns, verbs, prepositions, and conjunctions, demanding constant attention to detail for accurate communication.

1 Navajo

Navajo, spoken primarily in the American Southwest, stands as a formidable test for any language enthusiast.

Its grammar resembles a puzzle, with prefixes and suffixes snapping together to form words, while a captivating tonal system lets pitch and stress reshape meaning.

During World War II, the Allies enlisted Navajo code talkers because the language was virtually unbreakable—proof that its complexity can even confound seasoned cryptographers.

So if you’re ready for the ultimate linguistic gauntlet, Navajo might just be the final boss you’ve been searching for.