| lunatic(noun, adjective, person, crazy, mad) |
| maniac(noun, person, madness, insanity, lunatic) |
| loony(noun, adjective, person, crazy, mad) |
| psycho(noun, adjective, person, informal, madness) |
| crackpot(noun, adjective, person, crazy, mad) |
| psychotic(noun, person, informal, madness, insanity) |
| bedlamite(noun, adjective, person, character, madness) |
| crazy(noun, adjective, person, mad, odd) |
| kook(noun, person, madness, insanity, lunatic) |
| psychopath(noun, person, madness, insanity, lunatic) |
| nut(noun, informal, lunatic) |
| screwball(noun, adjective, lunatic) |
| idiot |
| imbecile |
| madwoman(noun, character, crazy, cuckoo, loony) |
| fool(adjective, lunatic) |
| freak(noun, person, madness, insanity, psycho) |
| looney(noun, adjective, character, lunatic, dissentient) |
| madcap(noun, person, madness, insanity, psycho) |
| nutcase(noun, character, lunatic, loony, dissentient) |