smarty pants
01
知ったかぶり, 利口ぶる
used to describe someone who acts overly intelligent or pretends to know more than others, often in a smug or show-off manner. It can be used affectionately or sarcastically
Humorous
Informal
例
Stop being such a smarty pants and let someone else answer for once!
そんなに知ったかぶりをやめて、一度は他の人に答えさせなさい！
