| mindless(adjective, dull, simple, slow, silly) |
| brainless(adjective, dull, weak, simple, slow) |
| dull(adjective, simple, slow, foolish, stupid) |
| feeble-minded(adjective, simple, slow, foolish, stupid) |
| irrational(adjective, weak, simple, silly, foolish) |
| nutty(adjective, weak, simple, silly, foolish) |
| simple(adjective, dull, weak, slow, silly) |
| dim-witted(adjective, simple, slow, silly, foolish) |
| laughable(adjective, dull, silly, absurd, unintelligent) |
| thick(adjective, dull, simple, slow, foolish) |
| unintelligent(adjective, dull, weak, simple, slow) |
| dippy(adjective, weak, simple, knowledge, slang) |
| doltish(adjective, dull, weak, simple, slow) |
| loony(adjective, weak, simple, knowledge, ability) |
| unreasonable(adjective, weak, simple, silly, foolish) |
| witless(adjective, dull, weak, simple, slow) |
| cretinous(adjective, foolish, innocent, thick, unfamiliar) |
| dotty(adjective, weak, simple, silly, foolish) |
| addle-pated |
| dopey(adjective, dull, knowledge, slang, ability) |