| backward(adjective, dull, simple, slow, silly) |
| blubbery(adjective, deep, broad, bulky) |
| dumpy(adjective, heavy, short, sturdy) |
| idiotic(adjective, dull, simple, slow, silly) |
| ignorant(adjective, dull, simple, slow, silly) |
| silly(adjective, stupid, unreasonable, green) |
| imbecile(adjective, dull, simple, silly, foolish) |
| simple-minded(adjective, simple, slow, silly, foolish) |
| dimwitted(adjective, dull, simple, slang, ability) |
| half-witted(adjective, dull, simple, slow, silly) |
| inane(adjective, dull, simple, slow, silly) |
| pudgy(adjective, short, deep, broad) |
| senseless(adjective, dull, simple, slow, silly) |
| shallow(adjective, simple, flat, poor, slow) |
| blocky(adjective, stocky) |
| gullible(adjective, dull, simple, slow, silly) |
| illiterate(adjective, silly, stupid, innocent, green) |
| inexperienced(adjective, silly, stupid, innocent, green) |
| inexpert(adjective, simple, silly, stupid, coarse) |
| insensate(adjective, dull, simple, slow, silly) |