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¡aguas! — Mexican Spanish for Heads up! Watch out
Apr 28, 2026

¡aguas!

/ˈa.ɣwas/
Heads up! Watch out! — the warning your friends shout half a second before you step in it 💦

Spice level

salsa verde salsa habanera

works with anyone, anywhere.

Where it lives

common inCDMXMonterreyGuadalajaraMexican-American USA
used byfriendsfamiliescoworkersstrangers
vibefriendlyalerteveryday

Quick Answer

  • Aguas means heads up or watch out in Mexican Spanish.
  • Use it when someone is about to trip, miss something, or get caught by surprise.
  • It is casual, useful, and not offensive.

What it means

Aguas is a quick warning. It means heads up, careful, or watch out, usually when something is happening right now.

It can be serious or playful. Someone can shout it before you step into a pothole, or whisper it when the boss walks into the room.

Literal meaning

Literally, aguas means waters. The plural sounds strange until you know the old story behind it.

In colonial cities, people warned the street below before throwing dirty water out a window. The water is gone, but the warning stayed.

How Mexicans use it

Mexicans use aguas as a fast alert. It works before a physical danger, a social risk, or a small surprise.

You will hear aguas con... before the thing you should watch out for: aguas con el escalón, aguas con el perro, aguas con tu jefe.

In texts and group chats it shows up as a heads-up too — 'aguas, hay retén en Insurgentes' or 'aguas con ese link' — a quick way to flag a risk to friends.

Tone and safety

Aguas is safe and normal. It is informal, but it is not vulgar.

If the situation is formal, cuidado is cleaner. In real life, aguas sounds faster and more Mexican.

Common mistake

The common mistake is translating it as water. In slang, aguas is almost never about actual water.

Another mistake is using it after the danger has passed. Aguas works best right before the thing happens.

Don't sound gringo

This is one of the safest slang words you'll learn — you can shout it at a total stranger about to step into traffic and it lands as helpful, not rude. Pair it with 'con' to name the danger: aguas con el escalón, aguas con tu cartera. That little 'con' makes you sound like you've lived here.

Examples

  • ¡Aguas con el escalón!
    Watch out for the step!
  • Aguas, ahí viene el jefe.
    Heads up, the boss is coming.
  • ¡Aguas, se te va a caer la salsa!
    Careful, you are about to drop the salsa!

Where you'll hear it

  • crossing a CDMX street when a friend yanks your sleeve — 'aguas, el bache' — half a second before you roll an ankle
  • on the metro at rush hour when someone behind you mutters 'aguas con la cartera' as the doors fill up
  • at the taquería when the salsera slides a plate your way and the guy warns 'aguas, está bien picosa'
  • in the office when a coworker leans over and whispers 'aguas, ahí viene el jefe' as you're mid-meme
  • stepping off the curb in Roma when a moto blows past and three people yell 'aguas' at once

Mini dialogue

¡Aguas, ahí va el bache!
¡Híjole, casi dejo media llanta ahí!
Te dije, esa calle parece videojuego nivel difícil.
Aguas con el siguiente, viene más feo.

FAQ

What does ¡aguas! mean?

¡Aguas! means heads up! watch out in Mexican Spanish.

Is ¡aguas! rude?

Aguas is not rude. It is a casual warning you can use with friends, family, coworkers, or strangers when someone needs to watch out.

Where is ¡aguas! used?

¡Aguas! is used in Mexico, especially everyday street and family speech.

What is a natural example of ¡aguas!?

A natural example is: ¡Aguas con el escalón! That means: "Watch out for the step!"

What is the difference between aguas and cuidado?

Cuidado is the neutral, slightly formal 'be careful' that works anywhere, including signs and writing. Aguas is the casual, faster street version — same warning, more Mexican, best for friends and quick spoken alerts.

What is a similar word to ¡aguas!?

A similar word is ¡híjole!. Check the related words below for more nearby Mexican Spanish expressions.

Don't confuse with

Test yourself

tap an answer.

What does '¡aguas!' usually mean in Mexican Spanish?

Your friend is about to step off the curb without looking and a car is coming. What do you shout?

A coworker leans over and says 'aguas, ahí viene el jefe.' What are they telling you?

The one thing

aguas is the mexican 'heads up' — a fast, friendly warning you can shout at anyone, right before they trip, get caught, or step in it.

Mentioned in

longer reads where this word shows up.

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