Spanish vocabulary · Beginner
Be Careful in Spanish: Ten Cuidado, Cuidado, and More
Ten Cuidado · phrase · tehn kwee-DAH-doh
Be careful translates to ten cuidado when speaking to someone you'd address as tú, and tenga cuidado when using the formal usted. The standalone exclamation ¡Cuidado! works as a quick warning in any register. In Mexico, you'll also hear ¡Aguas! as slang for watch out.
Ten cuidado is tehn kwee-DAH-doh, with stress on the DA syllable. ¡Cuidado! alone is kwee-DAH-doh. ¡Aguas! is AH-gwahs.
Ten cuidado con el escalón.
Be careful with the step.
Be Careful in Spanish: Quick Reference
Below are the most common Spanish words for be careful, with pronunciation and regional usage notes.
| Spanish | English | Pronunciation | Region / Register |
|---|---|---|---|
| ten cuidado | be careful | tehn kwee-DAH-doh | Default, widely understood |
| cuidado | be careful | quick warning, universal | |
| tenga cuidado | be careful | formal or usted form | |
| ojo | be careful | colloquial heads-up, Latin America | |
| aguas | be careful | Mexico, informal watch out |
How Native Speakers Use Ten Cuidado
Real example sentences across three contexts you'll actually run into.
Warning a friend (informal)
Ten cuidado al cruzar la calle, hay mucho tráfico.
Be careful crossing the street, there's a lot of traffic.
Ten cuidado uses the tú imperative of tener, the most natural informal form.
Shouting a quick warning
¡Cuidado! El piso está mojado.
Careful! The floor is wet.
A single word ¡Cuidado! is the fastest way to warn someone of immediate danger.
Formal setting (usted)
Tenga cuidado con los documentos, son originales.
Be careful with the documents, they're originals.
Tenga cuidado is the usted form, used with strangers, elders, or in professional settings.
Mexican slang
¡Aguas con ese perro, muerde!
Watch out for that dog, it bites!
¡Aguas! is uniquely Mexican slang. It's informal but widely understood across Mexico.
Avoid These Mistakes When Using Ten Cuidado
Mixing up tú and usted forms
Incorrect: Tenga cuidado, hermano.
Correct: Ten cuidado, hermano.
Tenga is the usted imperative. If you're calling someone hermano (bro), you're clearly on tú terms, so ten cuidado is the right match.
Saying sé cuidadoso instead of ten cuidado
Incorrect: Sé cuidadoso con el fuego.
Correct: Ten cuidado con el fuego.
While sé cuidadoso is grammatically possible, it sounds stiff. Spanish speakers overwhelmingly prefer ten cuidado for the be careful warning.
Lock in Be Careful Vocabulary with the Parrot Method
Why word lists alone don't stick
Memorizing a translation feels productive, but most learners forget 70% of what they studied within 48 hours. Vocabulary needs spaced repetition AND real-world exposure to transfer to long-term memory.
See Ten Cuidado used by native speakers
Parrot's short-form videos feature native speakers using ten cuidado in real situations. Context-based exposure beats flashcards, you hear Ten cuidado con el escalón. while watching someone live the moment, connecting meaning, sound, and rhythm at once.
Save, review, repeat, stay consistent
Tap any word to save it. Parrot's spaced-repetition system surfaces it right before you'd forget, no manual flashcard creation. The watch, parrot back, save, review cycle turns recognition into fluency at 2.7x the speed of traditional study.
Common Questions About Be Careful in Spanish
- How do you say be careful in Spanish?
- Be careful in Spanish is ten cuidado (informal tú) or tenga cuidado (formal usted). For a quick warning shout, just say ¡Cuidado! In Mexico, the slang ¡Aguas! also means watch out.
- What does ¡Aguas! mean in Mexican Spanish?
- ¡Aguas! is Mexican slang for watch out or be careful. It comes from the colonial-era practice of shouting ¡Aguas! (waters!) before dumping dirty water from a window. Today it's an everyday heads-up.
- When should I use tenga cuidado instead of ten cuidado?
- Use tenga cuidado when addressing someone formally—strangers, elders, authority figures, or anyone you'd call usted. Use ten cuidado with friends, family, and peers you'd address as tú.