adjective
- crazy or mentally unstable
Usage: informal; sometimes considered offensive
noun
- a crazy or eccentric person
Usage: informal; sometimes considered offensive
Examples
- That looney idea will never work.
- He’s acting completely looney today.
- Don’t listen to that old looney.
- The whole plan sounds looney to me.
- She called him a looney for believing in conspiracy theories.
- His looney behavior worried his friends.