| brainsick(adjective, strange, fool, mad, freak) |
| certifiable(adjective, bad, mad, ill, insane) |
| crackbrained(adjective, strange, fool, mad, freak) |
| hysterical(adjective, bad, mad, ill, insane) |
| luny(noun, adjective, bad, slang, mad) |
| moonstruck(strange, fool, silly, foolish, mad) |
| not all there(noun, expression, idiom, slang, mad) |
| nutty(adjective, bad, silly, foolish, crazy) |
| odd(unusual, strange, fool, silly, foolish) |
| paranoiac(noun, person, psychosis) |
| schiz(noun, slang, strange, mad, sick) |
| schizophrenic(noun, adjective, person, crazy, mad) |
| touched(strange, silly, foolish, crazy, mad) |
| psychotic person(noun, expression, idiom, person, psychosis) |
| bughouse(adjective, strange, fool, mad, freak) |
| jerk-off(noun, bad, slang, mad, ill) |
| loon(noun, slang, mad, sick, patient) |
| neurotic(noun, adjective, person, mad, nervous) |
| stark-mad(adjective, strange, fool, mad, freak) |
| animal(noun, feature, characteristic, detail, strange) |