| bereft of reason(expression, idiom, insanity) |
| berserk(adjective, silly, foolish, crazy, mad) |
| besotted(adjective, simple, slow, stupid, boring) |
| chapped |
| dense(adjective, simple, slow, silly, foolish) |
| doltish(adjective, weak, simple, slow, silly) |
| eager(feature, character, behavior) |
| erratic(adjective, wild, silly, foolish, crazy) |
| fatuitous |
| featherheaded |
| feebleminded(weak, simple, silly, foolish, thoughtless) |
| flighty(crazy, cuckoo, queer) |
| flipped out(expression, silly, foolish, crazy, mad) |
| freaked out(expression, silly, foolish, crazy, mad) |
| frenzied(adjective, wrong, silly, foolish, stupid) |
| frivolous(silly, crazy, absurd, unintelligent, wacky) |
| futile(adjective, silly, ridiculous, absurd, pointless) |
| half-witted(weak, simple, silly, foolish, stupid) |
| illogical(adjective, silly, foolish, stupid, crazy) |
| incongruous(adjective, silly, stupid, insignificant, unreasonable) |