| delirious(adjective, wild, enthusiastic, silly, foolish) |
| deranged(adjective, wild, enthusiastic, silly, foolish) |
| nutty(adjective, wild, enthusiastic, silly, foolish) |
| round the bend(expression, idiom, silly, foolish) |
| ape(adjective, strong, severe, intense, violent) |
| barmy(silly, foolish, insane, unwise) |
| bats in the belfry(expression, idiom, silly, foolish) |
| batty(silly, foolish, insane, unwise) |
| berserk(adjective, wild, enthusiastic, silly, foolish) |
| bonkers(silly, foolish, insane, unwise) |
| crazed(adjective, wild, silly, foolish, crazy) |
| cuckoo(silly, foolish, insane, unwise) |
| dippy(silly, foolish, insane, unwise) |
| flaky(silly, foolish, insane, unwise) |
| flipped out(expression, silly, hot, crazy) |
| freaked out(expression, wild, enthusiastic, silly, foolish) |
| fruity(silly, foolish, insane, unwise) |
| insane(adjective, wild, silly, foolish, crazy) |
| kooky(silly, foolish, insane, unwise) |
| mad as a March hare(expression, idiom, silly, foolish) |