Quick answer
Che means hey or mate. Boludo shifts between mate and idiot depending entirely on tone and relationship, so understand it before using it. Argentines say vos rather than tu, with its own verb forms: vos hablas becomes vos hablas with the accent moved, and tu eres becomes vos sos.
Argentine Spanish is not a dialect you learn after the real thing. It is what forty-six million people speak, and it will defeat you on arrival if all you have studied is textbook Spanish. This guide covers the slang that matters, when a word is affectionate and when it is an insult, and the grammar nobody warns you about.
In this article
What does che boludo mean?
Che is a filler meaning roughly “hey” or “mate”, used to get attention or start a sentence. It is so characteristically Argentine that Ernesto Guevara was nicknamed Che by Cubans for saying it constantly.
Boludo is the difficult one. Literally derived from a crude root, it can mean idiot, mate, or nothing at all, depending entirely on tone and relationship. Between friends, che boludo is closer to “hey mate”. Said flatly to a stranger, it is an insult.
The rule for visitors: understand it, enjoy it, and do not use it for a few weeks. Getting the tone wrong is the fastest way to sound either rude or like someone performing Argentine-ness.
What is Rioplatense Spanish?
The Spanish of Buenos Aires, Rosario, Montevideo and the surrounding River Plate region. Three things make it immediately recognisable:
- The sh sound. Ll and y are pronounced like the s in “measure”. Calle sounds like CA-she, yo like sho.
- The melody. A rising and falling intonation inherited from a century of Italian immigration. It sounds, to many ears, like Spanish spoken by an Italian.
- Vos. Not tú. With its own verb forms.
What is voseo and how do you use it?
Argentines say vos where your textbook says tú, and it takes different verb endings in the present tense and the imperative. It is not slang or informal error; it is the standard second person singular in Argentina, used in advertising, newspapers and by presidents.
| Textbook | Argentina | English |
|---|---|---|
| tú hablas | vos hablás | you speak |
| tú comes | vos comés | you eat |
| tú vives | vos vivís | you live |
| tú eres | vos sos | you are |
| tú tienes | vos tenés | you have |
| habla (command) | hablá | speak |
The pattern for regular verbs is simpler than it looks: drop the r from the infinitive and put an accent on the final vowel. Hablar becomes hablás. There are almost no irregulars, which makes voseo easier than the form it replaces.
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See our Buenos Aires schoolWhat Argentine slang should you actually know?
| Word | Means | Note |
|---|---|---|
| che | hey, mate | Safe to use immediately |
| boludo | mate, or idiot | Tone decides. Wait before using. |
| quilombo | a mess, chaos | Extremely common, mildly crude origin |
| laburo | work, job | From Italian lavoro |
| bondi | bus | You will need this on day one |
| guita | money | Informal, universal |
| copado | cool, great | Safe, friendly |
| pibe / mina | guy / woman | Casual. Mina can grate; use with care. |
| re | very, really | Attach to anything: re bueno, re caro |
| dale | okay, go on, sure | The most useful word on this list |
| posta | for real, seriously | Very common among younger speakers |
| chamuyo | sweet talk, waffle | Sometimes flirtation, sometimes nonsense |
What is lunfardo?
The slang that grew in late nineteenth century Buenos Aires among working-class and immigrant communities, heavily Italian-influenced, and carried into the wider language by tango lyrics. Many words now considered ordinary Argentine Spanish began as lunfardo, including laburo, guita and mina.
One of its habits survives as a game: vesre, syllable reversal. Tango becomes gotán, café becomes feca, amigo becomes gomía. You do not need to produce it. You need to recognise it when someone does.
Which words should you avoid?
Two matter more than the rest, and both catch out learners who studied elsewhere.
- Coger. In Spain it means to take or catch, as in a bus. In Argentina it is explicitly sexual. Use tomar for transport, always.
- Concha. Innocuous in much of the Spanish-speaking world, vulgar in Argentina. It is also a common name elsewhere, which produces the incident every teacher has witnessed at least once.
Will Argentine Spanish be understood elsewhere?
Yes, completely. Argentines are understood across the Spanish-speaking world, and the differences are register and vocabulary rather than grammar. What learners find is the reverse of what they fear: having learned in Buenos Aires, you understand everyone else more easily than they understand each other, because you have trained on one of the more distinctive accents.
If you want to learn it where it is spoken, that is what we do at our Buenos Aires school, with teachers who grew up speaking it. Our free level test will tell you where to start.
Frequently asked questions
Is Argentine Spanish hard to understand?
Harder than neutral Latin American Spanish at first, mainly because of the sh pronunciation of ll and y, the Italian-influenced intonation and the speed. Most learners adjust within two to three weeks of daily exposure, after which other accents feel easy.
Should I learn vos or tú?
Learn whichever is used where you are going. If that is Argentina, Uruguay, Paraguay or much of Central America, learn vos. Argentines understand tú perfectly but essentially never use it, and continuing to use it marks you as someone who learned elsewhere.
Is boludo a bad word?
It depends entirely on tone and relationship. Among friends it is affectionate and means something like mate. Said coldly to someone you do not know, it is an insult. Understand it before you use it.
What language do they speak in Argentina?
Spanish, specifically the Rioplatense variety, alongside recognised indigenous languages including Quechua, Guaraní and Mapudungun in some regions. Italian immigration shaped both the accent and a large amount of everyday vocabulary.
Related: for slang across the wider Spanish-speaking world rather than Argentina specifically, see Spanish slang and colloquialisms. For how lunfardo travelled through tango, read Buenos Aires slang in tango lyrics.
