| cracked(adjective, wild, silly, foolish, stupid) |
| crazed(adjective, wild, silly, foolish, stupid) |
| kooky(adjective, wild, silly, foolish, crazy) |
| mental(adjective, silly, foolish, insane) |
| of unsound mind(expression, adjective, idiom, wild, silly) |
| out to lunch(expression, adjective, idiom, wild, silly) |
| daffy(adjective, silly, foolish, crazy) |
| screwball(adjective, silly, foolish, insane) |
| silly(adjective, wild, foolish, stupid, crazy) |
| eccentric(adjective, wild, silly, foolish, crazy) |
| flaky(adjective, silly, foolish, insane) |
| irrational(adjective, wild, silly, foolish, crazy) |
| maniacal(adjective, silly, foolish, insane) |
| round the bend(expression, adjective, idiom, wild, silly) |
| schizo(adjective, wild, silly, foolish) |
| absurd(adjective, wild, silly, foolish, stupid) |
| bats in the belfry(expression, adjective, idiom, wild, silly) |
| berserk(adjective, silly, foolish, insane) |
| buggy(adjective, silly, foolish, crazy) |
| delirious(adjective, silly, foolish, insane) |