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1. An impudent or insolent rejoinder
   "don't give me any of your sassing";
   - sass [N. Amer], backtalk [N. Amer], back talk [N. Amer], lip, mouth, backchat [Brit]

1. Answer back in an impudent or insolent manner
   "don't sass me!"; "The teacher punished the students who were sassing all morning"

Type of: answer, comeback, counter, rejoinder, replication, reply, respond, retort, return, riposte

Encyclopedia: Sass