| absurd |
| blockhead(noun, simple, fool, innocent, jerk) |
| crazy(adjective, foolish, insane) |
| dope(noun, simple, ability, informal, fool) |
| halfwit(noun, simple, fool, innocent, jerk) |
| inane(adjective, dull, simple, silly, foolish) |
| ludicrous(adjective, silly, foolish, stupid, unintelligent) |
| simple(noun, adjective, dull, ability, slow) |
| asinine(adjective, dull, simple, silly, foolish) |
| clod(noun, person, simple, fool, innocent) |
| dimwit(noun, person, simple, fool, innocent) |
| retard |
| ignoramus(noun, simple, fool, innocent, jerk) |
| backward(adjective, dull, simple, slow, silly) |
| bonehead(noun, simple, fool, innocent, jerk) |
| daft(adjective, foolish, stupid, crazy, insane) |
| dummy(noun, person, dull, simple, fool) |
| jackass(noun, simple, ability, fool, innocent) |
| senseless(adjective, dull, silly, foolish, stupid) |
| slow(adjective, dull, simple, silly, foolish) |