1. Someone being or trying to be irritatingly clever; a smart alec
   - bright spark, smart-arse [Brit, Cdn], smartypants, smarty, smartie

Derived forms: smart-asses

• under attack
• under fire
• under it
• under that
• under the circumstances
• under the weather
• under wraps
• under-represent
• under-the-counter
• under-the-table
• underachieve
• underachievement
• underachiever
• underact
• underactive
• underage
• underarm
• underbelly
• underbid
• underbodice
• underbody
• underboss
• underbred
• underbrush
• undercarriage