| weird(adjective, strange, silly, fantastic, odd) |
| blockheaded(adjective, impulsive, impractical, half-baked, doomed) |
| cockamamie(adjective, weak, simple, wrong, silly) |
| cockamamy(adjective, silly, thoughtless, unintelligent, nonsensical) |
| dopy |
| empty |
| feeble-minded(adjective, silly, stupid, vague, impulsive) |
| flighty(adjective, simple, slight, careless, silly) |
| fond(adjective, loving) |
| fool(noun, adjective) |
| giddy(adjective, simple, rough, careless, silly) |
| goosy |
| hasty(adjective, careless, impulsive, rash, risky) |
| impetuous(adjective, rough, careless, crazy, thoughtless) |
| inept(careless, stupid, rash, risky, unthinking) |
| insensate(adjective, dull, simple, ability, slow) |
| madcap(adjective, rough, careless, silly, crazy) |
| obtuse(adjective, dull, simple, careless, silly) |
| sappy(adjective, knowledge, slang, ability) |
| slow-witted |