| half-witted(adjective, dull, weak, simple, slow) |
| impolitic(adjective, wrong, careless, stupid, thoughtless) |
| incautious(adjective, weak, simple, careless, silly) |
| reckless(adjective, careless, silly, stupid, crazy) |
| scatterbrained(careless, silly, stupid, trivial, unthinking) |
| unthinking(adjective, dull, simple, wrong, slight) |
| bizarre(adjective, wild, strange, silly, stupid) |
| extravagant(adjective, rough, strange, stupid, crazy) |
| hare-brained(adjective, silly, crazy, zany, wacky) |
| harebrained(adjective, weak, simple, knowledge, ability) |
| inadvisable(adjective, rash, unwise, risky, recommended) |
| irresponsible(adjective, careless, silly, stupid, fantastic) |
| outlandish(adjective, offensive, rude, wild, strange) |
| vacuous(adjective, careless, indifferent, silly, stupid) |
| balmy(adjective, knowledge, slang, ability, wild) |
| batty(adjective, wild, silly, stupid, crazy) |
| comical(adjective, strange, silly, crazy, insane) |
| cuckoo(adjective, silly, stupid, unwise) |
| empty-headed(adjective, slight, careless, indifferent, silly) |
| half-baked(adjective, dull, simple, stupid, fantastic) |