noun
- a person who behaves in a crazy or eccentric way
Usage: informal; sometimes offensive
Examples
- My neighbor is a complete nutcase who talks to his garden gnomes.
- Don’t listen to him – everyone knows he’s a nutcase.
- She called her ex-boyfriend a nutcase after he showed up at her work uninvited.
- The conspiracy theorist was dismissed as just another nutcase.
- He acts like a nutcase when he doesn’t get enough sleep.
- That nutcase driver was weaving between lanes without signaling.