The Complete Guide to Mexico City Spanish Slang (CDMX Dialect)

Mexico City Spanish is its own thing. Chilangos (CDMX locals) speak fast, use heavy slang, and borrow from Náhuatl in ways that no app ever prepared you for.

I know because I moved there speaking what I thought was decent Spanish, enough to get by, I thought. Two weeks in, I realized I couldn’t follow a single conversation at the taquería counter without asking people to repeat themselves three times.

This guide is the result of two years on CDMX streets, markets, and conversations. These are phrases that actually come up, with context on when to use them, when not to, and why.

The Essentials You Can’t Go Without

¿Qué onda?

Forget ¿Cómo estás?. Nobody says that on the street. ¿Qué onda? is the default casual greeting. Literally “what’s the wave?” but functionally: “what’s up?” or “how’s it going?”

You’ll hear it dozens of times a day. Use it freely with anyone you’re on familiar terms with. Don’t use it with a police officer or your landlord’s grandmother.

Pronunciation note: The qu- in qué is a hard “K” sound. QUÉ ON-da. The onda rhymes with “Honda.”

Güey (or wey)

This is the most-used word in Mexican Spanish, full stop. Roughly equivalent to “dude” or “man,” used between friends, with vendors you know, with basically anyone in a casual context.

Technically it started as an insult (long story involving castrated bulls). But it has completely lost that meaning in everyday use. Between friends it’s neutral to affectionate. Said to a stranger, it’s still a bit blunt.

Spelling tip: You’ll see it written as both güey and wey. Both are correct. The pronunciation is the same: “way.”

No manches / No mames

No manches is the PG version. No mames is the R-rated version. Both mean something between “no way,” “you’re kidding me,” and a certain English expletive.

No manches is fine in any casual context. No mames you should know to understand locals, but use it carefully until you know the register.

Chido / Chida

“Cool,” “great,” “awesome.” Used constantly. Está chido: that’s cool. Qué chido: how cool. Es muy chida: it’s really great (feminine noun).

Neta

“Truth” or “for real.” La neta = the honest truth. ¿Neta? = “Really? Seriously?” You’ll hear this one everywhere.

At the Taquería

This is where a lot of people freeze up. The pace is fast, the cook is busy, and the order isn’t always obvious.

¿Qué le pongo? / ¿Qué se le ofrece?

What the cook says: “What can I get you?” Both phrases mean roughly the same thing. ¿Qué se le ofrece? is slightly more formal.

What you say back: Name your taco filling and number. “Dos de pastor, uno de suadero.” No need for por favor at every sentence; it slows things down and sounds odd at a fast-moving counter.

Al gusto

“To your taste.” When they ask ¿con todo? (with everything) and you say al gusto, you’re saying “however you recommend it.” Works fine for tourists, but as you get more familiar you’ll want to specify: sin cilantro, con todo lo demás (no cilantro, everything else).

Un kilo de tortillas / Medio kilo

At tortillerías, you order by weight. Un kilo is roughly 12-15 tortillas. If you’re cooking for two for a few days, un kilo is right.

At Markets (Mercados)

¿A cómo?

“How much?” Efficient and direct. Standard when you want the price of something at a market stall.

¿Me da…?

“Can you give me…?” This is the polite standard for ordering/requesting at a market. ¿Me da un kilo de jitomate? (Can I get a kilo of tomatoes?) More polite and natural than quiero (I want).

Le dejo en…

“I’ll let you have it for…” This is what vendors say when they’re offering you a price. Common in negotiation.

¿Le late?

“Does that work for you?” A casual way to confirm a deal. Te lo dejo en cien. ¿Le late? (I’ll give it to you for a hundred. Sound good?)

Everyday Mexican Vocabulary You Won’t Learn in a Spain-Based Course

Mexico City’s Spanish includes words that no Spain-based textbook covers. Some are Náhuatl loanwords; others are just Mexican vocabulary that diverged from Spain Spanish over five centuries.

Jitomate is the big one. If you ask for tomate in CDMX, you’ll get the small green tomatillo. If you want the red tomato, say jitomate.

Only jitomate in this list is actually Náhuatl-derived (from xitomatl). The others are standard Mexican Spanish that diverges from what Spain-based textbooks teach. Náhuatl loanwords that do show up constantly in everyday CDMX speech include: aguacate, elote, chapulín, chayote, cuate, tianguis, and chile itself.

Transport Vocabulary

CDMX has its own transport ecosystem with vocabulary that doesn’t translate directly.

Metro / Sistema de Transporte Colectivo: the subway system. Just call it “el metro.”

Metrobús: the bus rapid transit (BRT) system. Separate from regular buses, has dedicated lanes.

Camión: city bus. Generic term for any bus.

Pesero / Combi: smaller shared minivans that run fixed routes. Cheap and fast but confusing to navigate at first.

Uber / DiDi: both are widely used in CDMX. Safer than hailing random taxis, especially at night.

Words That Will Get You in Trouble

Some words common in Spain are vulgar or offensive in Mexico. The big one:

Coger: In Spain, this means “to take” or “to grab” (perfectly innocent). In Mexico, it means “to have sex.” Do not say voy a coger el camión (I’m going to take the bus) in Mexico. Say tomar el camión or agarrar el camión.

Similarly, tío/tía is used naturally in Spain to mean “guy/girl” but sounds foreign and odd in CDMX. Mexicans say güey, mano, carnal, or just the person’s name.

The Sounds of CDMX Spanish

Mexico City Spanish has a distinctive sound profile compared to other Spanish dialects.

Vowels are clear and consistent. Unlike Caribbean Spanish (Cuban, Puerto Rican), which drops syllables and blends sounds, Mexican Spanish, especially CDMX, is notably clear. Each syllable is pronounced. This actually makes it one of the easier dialects for learners.

The “s” at the end of words is pronounced. In many Spanish dialects, final “s” sounds get swallowed. In CDMX it’s typically clear. Más sounds like más, not má.

Double “l” (ll) and “y” both sound like “y.” Calle (street) sounds like ca-yeh, not ca-she as in Argentina.

Practice It Aloud

Reading this guide is a start. But the only way this vocabulary actually sticks is through pronunciation practice and hearing it used in context.

StreetTongue has the full CDMX phrase library with pronunciation scoring, so you can practice the words in this guide, and hundreds more, with real feedback on how close your accent is to a local.

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