How to Say "to sass" in Spanish
The Spanish word for “to sass” is “contestar” — B1 level.
English → SpanishB1
verbB1informal
informal retort

Examples
No me contestes de esa manera, jovencito.
Don't talk back to me that way, young man.
Cuando lo regañaron, contestó con un comentario sarcástico.
When they scolded him, he retorted with a sarcastic comment.
Implied Tone
In this sense, 'contestar' often carries a negative implication of defiance or impudence, even if the words themselves are just a reply.
Related Translations
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