Buenos Aires Spanish Accent: Why Porteños Say Sh

By Camila Rossi, Culture writer, Buenos Aires & Barcelona

Updated August 12, 2026 · Reviewed by the Audaz editorial team

Why does Buenos Aires Spanish sound nothing like Spain Spanish?

Two things happen at once, and learners usually only notice one of them.

The first is the sh sound. Where a Spaniard says ca-lye for calle (street), a porteño says something close to ca-she. Ella (she) becomes e-sha. Desayuno (breakfast) becomes de-sa-shu-no. It is the single loudest marker of the accent.

The second is the melody. Buenos Aires Spanish rises and falls on a different schedule from Madrid Spanish. People describe it as sounding Italian. They are not imagining it, and we will get to the evidence.

There is a third feature, vos in place of tú, which we covered separately in our guide to Argentine Spanish and voseo. This piece is about the sound and the words.

What is the sh sound in Argentine Spanish actually called?

It has a name, and it is the third step in a chain.

Step one is yeísmo. Old Spanish had two separate sounds, one for ll and one for y. Most of the Spanish-speaking world merged them into one. Argentina did this early.

Step two is zheísmo. The merged sound hardened into a buzz, the sound in the middle of the English word measure. As Vladimir Honsa put it in 1965, Standard Buenos Aires “has changed the phoneme /j/ into the voiced palatal fricative”. This is the sound in most tango recordings and most travel guides.

Step three is sheísmo. The buzz lost its voice and became a plain sh, the sound at the start of the English word ship. Chang describes it as “the devoicing of a merged palatal phoneme that appears to have started in the colloquial speech of the lower working classes of Buenos Aires”.

Why the guidebooks disagree with each other. Chang opened his paper by lining up travel writers who describe the porteño accent. Some say it is a zh like the French je. Others say it is sh like ship. Others split the difference and call it “somewhere between ch and zh”. They are not all wrong. They are describing different decades.

How recent is the Buenos Aires sh sound?

Recent enough that you can hear the whole change in one room of people.

In June 2007, Charles B. Chang recorded eleven native speakers from Buenos Aires and its surroundings reading Mafalda comic strips out loud. The reading passage contained 41 instances of the sound. He then measured, for each speaker, how often it came out as a voiceless sh.

The result splits the room by birth year, not by anything else.

Read the top and the bottom of that table again. A man born in 1938 never once used the sound. A woman born in 1986 used it every single time. They lived in the same city.

Chang ran the statistics and found that age alone accounted for “upwards of 90% of the variance”. Gender did not improve the model. Neither did the neighbourhood people grew up in. His conclusion was that “a change from voiced to voiceless is already complete”.

The practical warning. If you learn “the Argentine accent” from old tango recordings or classic Argentine cinema, you will learn the zh sound. That is the accent of people who are now in their eighties. Porteños under forty do not speak that way.

Who started the change, and when?

The dating comes from Honsa, writing in 1965. He pinned the moment tightly. “A change in the dialect must have occurred between the years 1946 and 1949”, he wrote, when large numbers of rural workers were moving into Buenos Aires, and the new sound then “took root and rapidly spread into the colloquial usage of all classes”.

The question of who carried it has a clearer answer. María Beatriz Fontanella de Weinberg studied 60 speakers from one Buenos Aires neighbourhood in 1978. She found the sh sound most often in women aged 15 to 30, then women aged 31 to 50, then men aged 15 to 30, and least in men aged 31 to 50. In speakers aged 51 to 70 it was almost absent.

Chang summarises her finding plainly: “devoicing began among young females, college-educated ones in particular, and then spread to other groups of speakers”.

By the time Chang recorded his speakers thirty years later, that head start had disappeared. Young men and young women in his sample devoiced at the same rate. The change had finished, and the gender gap closed behind it.

Why does Buenos Aires Spanish sound Italian?

Because of who was standing on the dock.

Between 1881 and 1914, more than four million people settled in Argentina, and about two million of them came from Italy. By the 1914 census, more than half the population of the city of Buenos Aires had been born abroad. Crucially, most Italian arrivals did not speak standard Italian. They spoke Genoese, Neapolitan, Piedmontese, Sicilian and Calabrian, and they learned Argentine Spanish without a standard Italian in between.

In 2004, Laura Colantoni and Jorge Gurlekian published an experimental study of Buenos Aires intonation in the journal Bilingualism: Language and Cognition. They found that Buenos Aires Spanish places its pitch peaks earlier in the word than other Spanish varieties, which consistently place them late. They also found a strong tendency for stepped-down peaks at the end of a phrase.

Their explanation is direct. These patterns, they write, “emerged at the turn of the twentieth century, and coincided with the peak of Italian immigration”, and are “due to a combination of direct and indirect transfer from Italian”.

So the Italian quality is not a stereotype about hand gestures. It is a measurable feature of where the pitch lands, and it arrived with the ships.

What is lunfardo, and how much of it is Italian?

Lunfardo is the slang that grew out of the same immigration. It formed in the working-class districts of Buenos Aires and Montevideo in the late nineteenth and early twentieth centuries, from what one description calls “the mixture of languages and dialects produced due to the massive European immigration, mainly Italian and Spanish”.

A large share of its early vocabulary is Italian, and often Italian dialect rather than standard Italian. Some of the borrowings are so direct they barely changed spelling.

That last row matters. Lunfardo is not purely Italian. French, Portuguese and indigenous words are in there too. But the Italian layer is the thickest one, and it is the layer you hear in tango lyrics.

What is vesre, and why does Buenos Aires talk backwards?

Vesre is lunfardo’s favourite game. You take a word and reverse its syllables.

The name is the joke. Revés means reverse. Flip the syllables and you get vesre. The word demonstrates itself.

• tango becomes gotán
• café becomes feca
• muchacho (guy) becomes chochamu
• amigos (friends) becomes gomías
• calor (heat) becomes lorca
• pagar (to pay) becomes garpar
• uruguayo (Uruguayan) becomes yorugua

You will not need to produce these. You will need to recognise them, because a tango lyric or an Argentine novel will hand you one with no warning and no gloss.

Does the porteño accent make Spanish harder to learn?

For listening, briefly. For speaking, no.

The sh sound is one substitution, and it is consistent. Once you know that every ll and every y becomes sh, you can decode a porteño in an afternoon. It is far easier than the sounds Spaniards drop at the ends of words, or the disappearing s of Caribbean Spanish.

Lunfardo is the harder half, because slang cannot be decoded from rules. You either know laburo or you do not.

Our honest verdict: do not try to imitate the porteño accent unless you are living there. Learn to understand it. A learner who says ca-she with a foreign rhythm underneath sounds stranger than one who simply says ca-lye and gets the sentence right. Accent imitation is the last thing you should spend effort on, not the first. If you want a foundation that works everywhere, start with our Spanish pronunciation rules native speakers follow.

How do you get used to Argentine Spanish?

Read Argentine writers and listen while you read. That combination does more for an ear than accent drills.

Argentine literature is unusually generous to learners. Short forms dominate, so you get whole finished pieces instead of abandoned chapters. Our list of the best Latin American novels to start with flags which ones lean Argentine, and our guide to contemporary Spanish-language authors covers who is publishing now.

For the ear specifically, film is the fastest route, and Argentine cinema is well represented in our roundup of Spanish films for language learning. For the slang layer, our guide to Spanish slang that makes you sound like a local flags which words travel and which give you away.

One rule for reading Argentine books. When a word looks like nonsense and is not in the dictionary, try reversing the syllables before you give up. Half the time you have just met vesre.

The part nobody tells you about accents

Learners treat regional accents as permanent facts of geography. They are not. They are events with dates.

The single most recognisable feature of Argentine Spanish was rare when the grandparents of today’s porteños were young, and universal by the time their grandchildren were teenagers. Nobody voted on it. Young women in Buenos Aires started saying it, and within two generations the whole city followed.

That is worth remembering the next time someone tells you there is one correct way to say a Spanish word. Correct is just whatever the last generation settled on, and it is still moving.

Frequently asked questions

Sources. Charles B. Chang, “Variation in Palatal Production in Buenos Aires Spanish”, in Selected Proceedings of the 4th Workshop on Spanish Sociolinguistics, ed. Maurice Westmoreland and Juan Antonio Thomas, Cascadilla Proceedings Project, 2008, pages 54 to 63 (speaker data, statistics, and the quotations from Honsa 1965, Fontanella de Weinberg 1978 and 1992, and Lipski 1994). Laura Colantoni and Jorge Gurlekian, “Convergence and intonation: historical evidence from Buenos Aires Spanish”, Bilingualism: Language and Cognition, volume 7, issue 2, 2004, pages 107 to 119. Immigration figures from the Argentine national census of 1914 as reported by the Economic History Society. Lunfardo etymologies and vesre examples as documented in the Wikipedia entry on Lunfardo.