wise guy
noun
Forms wise guys
- noun (informal, mildly derogatory, sarcastic or humorous) One who is insolent or flippant; one who makes jokes or perpetrates pranks. “Her reputation for being a wise guy made her new teachers hesitant about having her in their classes.”
- noun (slang) A knowledgeable or successful sports bettor.
- noun (US, slang) A member of the Mafia; a mobster.
- noun (slang) A hipster.
- noun (slang, offensive, ethnic slur) An Italian-American man.
Synonyms
know-all know-it-all smart aleck smarty wisecracker wisenheimer Mafioso wiseacre weisenheimer
Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “wise guy”, CC BY-SA 4.0. Details