1. He's a total nutcase who believes in conspiracy theories.
2. The neighbor's constant yelling and strange behavior made him seem like a real nutcase.
3. I don't want to be stuck in a room alone with that nutcase.
4. She's a total nutcase when it comes to cleaning and organizing.
5. The new employee turned out to be a complete nutcase, always talking to himself.
6. I can't believe I dated that nutcase for six months.
7. The politician was labeled a nutcase after his bizarre outburst during the debate.
8. He's a bit of a nutcase, always coming up with crazy ideas.
9. That guy is a real nutcase, always causing trouble wherever he goes.
10. The teacher was worried about the student's mental health, as he was starting to act like a nutcase in class.