| nuts(adjective, slang, silly, foolish, crazy) |
| nutty(adjective, slang, foolish, crazy) |
| loony(adjective, informal, silly, foolish, crazy) |
| batty(adjective, slang, silly, foolish, crazy) |
| cracked(adjective, informal, silly, foolish, crazy) |
| daft(adjective, silly, foolish, crazy) |
| kooky(adjective, silly, foolish, crazy) |
| crazy(adjective, silly, foolish, insane) |
| wacky(adjective, slang, silly, foolish, crazy) |
| daffy(adjective, informal, silly, foolish, crazy) |
| demented(adjective, silly, foolish, crazy) |
| insane(adjective, silly, foolish, crazy) |
| foolish(adjective, silly, crazy, irrational) |
| touched(adjective, silly, foolish, crazy) |
| enthusiastic(adjective, silly, foolish, crazy) |
| lunatic(adjective, silly, foolish, crazy) |
| bedlamite(adjective, silly, foolish, crazy) |
| gung ho(expression, adjective, silly, foolish, crazy) |
| keen(adjective, silly, foolish, crazy) |
| potty(adjective, silly, foolish, crazy) |