wise guy

Definition from Wiktionary, a free dictionary

[edit] English

[edit] Noun

wise guy (plural wise guys)

1. One given to making clever jokes regarded as rude or disrespectful; smart; a wisecracker.

   Her reputation for being a wise guy made her new teachers hesitant about having her in their classes.

2. A knowledgable or successful sports bettor.
3. (slang) A member of the Mafia; a mobster

[edit] Synonyms

• know-it-all, know-all
• smart aleck
• smarty
• wisecracker
• wisenheimer