Sassing back is a term used to describe a behavior that is considered impolite or disrespectful. Synonyms for sassing back include talking back, contradicting, rebutting, defying, disputing, challenging, protesting, objecting, and opposing. Talking back usually means responding to an authority figure in an impolite or insolent manner. Contradicting refers to disagreeing with or challenging a statement. Rebuking involves responding in a stern or admonishing tone. Disputing is similar to contradicting, but it implies more fervent opposition. Challenging refers to standing up to someone in an authoritative position. Protesting involves speaking out against an action or belief. Opposing refers to putting up resistance or actively disagreeing with someone.