smart-arse
/ˈsmɑːtɑːs
/(US smart-ass)
noun informal
A person who is irritating because they behave as if they know everything.I'm not a smart-arse who thinks he knows all the answers now, far from it....
- Cutting, heavily ironic comedy and musical numbers ensue, best appreciated for their dazzling cleverness, not for their smart-ass, apathetic politics.
- You could call Lee a smart-ass but he is too clever for that.