| insane(noun, adjective, silly, crazy) |
| mental(noun, adjective, slang, silly) |
| delirious(adjective, silly, foolish, crazy) |
| crazed(adjective, silly, foolish, crazy) |
| schizoid(adjective, mad, ill, insane) |
| irrational(adjective, silly, foolish, mad) |
| psychopathic(adjective, mad, ill, insane) |
| aberrant(adjective, mad, usual, ill) |
| daft(adjective, silly, foolish, crazy) |
| kooky(adjective, silly, foolish, crazy) |
| maniacal(adjective, silly, foolish, crazy) |
| frenzied(adjective, mad, ill, insane) |
| nutter(noun, slang, mad, ill) |
| certifiable(adjective, mad, ill, insane) |
| hysterical(adjective, mad, ill, insane) |
| luny(noun, adjective, slang, mad) |
| nutty(adjective, silly, foolish, crazy) |
| jerk-off(noun, slang, mad, ill) |
| basket case(noun, slang, mad, ill) |
| batty(adjective, silly, foolish, crazy) |