| silly(adjective, weak, simple, foolish, crazy) |
| absurd(adjective, weak, simple, wrong, wild) |
| around the bend(expression, adjective, idiom) |
| cockeyed(adjective, wild, crazy, irregular, dubious) |
| crazed(adjective, silly, foolish, crazy, mad) |
| cuckoo(adjective, silly, foolish, crazy, mad) |
| daffy(adjective, weak, simple, silly, foolish) |
| exceptional(adjective, unusual, strange, odd, weird) |
| irregular(adjective, extraordinary, unusual, wild, strange) |
| oddball(adjective, unusual, wild, strange, crazy) |
| potty(adjective, wild, silly, foolish, crazy) |
| unbalanced(adjective, strange, silly, foolish, crazy) |
| uncommon(adjective, unusual, wild, strange, crazy) |
| whimsical(adjective, unusual, wild, strange, crazy) |
| berserk(adjective, silly, foolish, crazy, mad) |
| bughouse |
| crackpot(adjective, eccentric, lunatic) |
| far-out(adjective, unusual, wild, strange, fantastic) |
| fatuous(weak, simple, silly, foolish, thoughtless) |
| freak(adjective, beat, character, unusual, strange) |