How to Say "warn" in Spanish
The Spanish word for “warn” is “avisar” — B1 level. This is a very common word in everyday Spanish.
English → SpanishB1
verbB1
to caution against danger
Examples
El guardia civil nos avisó del tráfico pesado en la carretera.
The police officer warned us about the heavy traffic on the road.
Te avisé que ese perro muerde, ¿por qué lo tocaste?
I warned you that dog bites, why did you touch it?
Los científicos avisaron al gobierno sobre el riesgo de inundación.
The scientists cautioned the government about the risk of flooding.
Warning vs. Telling
When 'avisar' means 'to warn,' it often focuses on preventing a bad outcome. The structure remains the same as 'to inform': 'avisar a alguien de algo' (warn someone of something).
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