1. a person who acts as if they are very intelligent or who shows off their knowledge
Usage: informal; often used to show annoyance

Examples

• Don’t be such a smarty – nobody likes a show-off.
• The teacher got tired of the smarty in the back row who always had something to say.
• My little brother thinks he’s a real smarty because he can solve math problems quickly.
• She called him a smarty when he corrected her pronunciation.
• The smarty at work always has to prove he knows more than everyone else.
• Stop being a smarty and just listen for once.