| barmy(adjective, silly, foolish, insane) |
| crazed(adjective, silly, foolish, stupid) |
| fruity(adjective, silly, foolish, insane) |
| wacky(adjective, silly, foolish, insane) |
| kooky(adjective, silly, foolish, insane) |
| schizo(adjective, wild, silly, foolish) |
| bats in the belfry(expression, adjective, idiom, wild, silly) |
| berserk(adjective, silly, foolish, insane) |
| delirious(adjective, silly, foolish, insane) |
| flipped out(expression, adjective, silly, foolish) |
| freaked out(expression, adjective, silly, foolish) |
| mad as a March hare(expression, adjective, idiom, wild, silly) |
| mad as a hatter(expression, adjective, idiom, wild, silly) |
| mentally strange(expression, adjective, silly, foolish) |
| nutty as fruitcake(expression, adjective, idiom, wild, silly) |
| psycho(adjective, silly, foolish, insane) |
| round the bend(expression, adjective, idiom, wild, silly) |
| screw loose(expression, adjective, wild, silly, foolish) |
| unglued(adjective, wild, silly, foolish) |
| ape(adjective, silly, foolish, insane) |