| dazed(dull, witless) |
| dunderheaded |
| feeble-minded(adjective, dull, simple, slow, foolish) |
| feebleminded(adjective, weak, simple, silly, foolish) |
| half-witted(adjective, dull, weak, simple, slow) |
| headless |
| imbecile(adjective, dull, simple, silly, foolish) |
| nonsensical(adjective, dull, weak, simple, silly) |
| oafish(adjective, stupid, clumsy) |
| pointless(adjective, dull, simple, slow, silly) |
| ridiculous(adjective, weak, simple, mind, think) |
| thick-witted(adjective, foolish, stupid, crazy, insane) |
| uninformed(adjective, ignorant) |
| vacuous(adjective, simple, slow, indifferent, silly) |
| weak(adjective, simple, silly, foolish, stupid) |
| backward(adjective, dull, simple, slow, silly) |
| bovine(adjective, obtuse) |
| deficient(adjective, dull, silly, foolish, stupid) |
| dopey(adjective, dull, simple, slow, foolish) |
| dull-witted |