smart mouth(redirected from a smart mouth)
1. One who is sarcastic and/or speaks to others with disrespect. Primarily heard in US. How dare you talk to me like that? I didn't raise you to be a smart mouth!
2. The tendency to speak in such a way. Since when did you get such a smart mouth? Don't talk back.
smart mouth someone
who makes wisecracks; a cocky person who speaks out of turn. Don't be a smart mouth with me! Mr. Atkins is going to get a reputation as a smart mouth.
n. someone who makes wisecracks; a cocky person who speaks out of turn. Don’t be a smart mouth with me!