| feeble-minded(adjective, simple, slow, stupid, boring) |
| fool |
| frivolous(adjective, simple, careless, foolish, stupid) |
| gaga(adjective, careless, silly, unsteady, inconstant) |
| unintellectual(adjective, simple, slow, stupid, boring) |
| unreasoning(foolish, unreasonable, illogical, imbecility folly) |
| addle-pated |
| beaglebrained(adjective, stupid) |
| boneheaded(adjective, simple, slow, silly, stupid) |
| clueless(adjective, stupid) |
| crackpot(adjective, foolish, impractical, half-baked, doomed) |
| cushion-witted(adjective, stupid) |
| dense(adjective, dull, simple, slow, silly) |
| featherheaded |
| harebrained(adjective, weak, simple, careless, silly) |
| illiterate(adjective, silly, stupid, green, fat) |
| jerky(adjective, weak, simple, silly, foolish) |
| ludicrous(adjective, dull, weak, simple, silly) |
| ridiculous(adjective, weak, simple, silly, foolish) |
| short-sighted(adjective, weak, simple, silly, foolish) |