| cockeyed(adjective, slang, crazy) |
| delirious(adjective, wild, silly, foolish, crazy) |
| doolally(adjective, slang, crazy) |
| flipped(silly, foolish, crazy, insane) |
| flipped out(expression, silly, foolish, crazy) |
| freaked out(expression, silly, foolish, insane) |
| gung ho(expression, adjective, concern, slang, silly) |
| mad as a March hare(expression, idiom, silly, foolish) |
| mad as a hatter(expression, adjective, idiom, silly, foolish) |
| mentally strange(expression, silly, foolish, insane) |
| mindless(insane, psychiatric) |
| nutty as fruitcake(expression, idiom, silly, foolish) |
| screw loose(expression, silly, foolish, insane) |
| unusual(adjective, silly, foolish, crazy) |
| bats in the belfry(expression, idiom, silly, foolish) |
| bedlamite(adjective, simple, silly, foolish, crazy) |
| cock-eyed(adjective, slang, crazy) |
| dingy(silly, foolish, insane, unwise) |
| giddy(adjective, simple, rough, silly, foolish) |
| harebrained(adjective, wild, silly, foolish, stupid) |