noun
- a person who is mentally unstable or dangerous
Usage: informal; often offensive
adjective
- relating to or characteristic of a psychopath; mentally unstable
Usage: informal; often offensive
Examples
- The movie featured a psycho who terrorized the small town.
- She called him a psycho after his violent outburst.
- The psycho killer was finally caught by police.
- His psycho behavior made everyone uncomfortable.
- That was a totally psycho thing to do.
- The documentary explored the mind of a psycho.