| fool(noun, person, simple, ability, prompt) |
| turkey(noun, animal, creature, fauna, simple) |
| ninny(noun, simple, ability, fool, silly) |
| cuckoo(noun, bird) |
| jackass(noun, ability) |
| idiot(noun, simple, ability, prompt, fool) |
| simpleton(noun, simple, ability, fool, innocent) |
| fathead(noun, simple, fool, silly, innocent) |
| gander(noun, ability, informal) |
| nincompoop(noun, simple, ability, fool, innocent) |
| silly(noun, simple, fool, innocent, sucker) |
| tomfool(noun, simple, ability, fool, silly) |
| zany(noun, fool) |
| duck(noun, animal, creature, fauna, character) |
| imbecile(noun, simple, ability, fool, innocent) |
| jerk(noun, simple, slang, ability, prompt) |
| nerd(informal, call, noun, fool) |
| pigeon(noun, animal, creature, fauna, character) |
| booby(noun, fool, bird) |
| bozo |