wise guy


noun

Informal. a cocksure, conceited, and often insolent person; smart aleck: He has a reputation for being a wise guy.
Also called wiseacre.

Origin of wise guy

An Americanism dating back to 1895–1900

OTHER WORDS FROM wise guy

wise-guy, adjective

British Dictionary definitions for wise guy

wise guy

noun

informal a person who is given to making conceited, sardonic, or insolent comments
US a member of the Mafia

Idioms and Phrases with wise guy

wise guy

An obnoxious know-it-all, a person who makes sarcastic or annoying remarks, as in the teacher was delighted that the worst wise guy in the class was moving out of town. [Slang; second half of 1800s] Also see smart aleck.