| Definition/Meaning | Word/Phrase |
|---|---|
| stir-crazy feeling | cabin fever |
| go crazy | flip out |
| make or go crazy | freak out |
| crazy or very foolish | insane |
| someone regarded as eccentric or crazy and standing out from a group | kook , odd fellow , odd fish , odd man out , queer bird , queer duck |
| crazy person | lunatic |
| person, crazy | lunatic , monomaniac , nut , psychopath , psychotic |
| (Yiddish) a crazy fool | meshuggeneh , meshuggener |
| crazy or insane | nuts |