| cuddie(noun, person, slang, stupidity) |
| cuddy(noun, person, slang, stupidity) |
| deadhead(noun, person, slang, stupidity) |
| dimwit(noun, person, slang, stupidity) |
| dip(noun, person, slang, stupidity) |
| dodo(noun, person, slang, stupidity) |
| dolt(noun, person, slang, stupidity) |
| donkey(noun, person, slang, stupidity) |
| doofus(noun, person, slang, stupidity) |
| dope(noun, person, slang, stupidity) |
| dork(noun, person, slang, stupidity) |
| drip(noun, person, slang, humourless) |
| dullard(noun, person, slang, stupidity) |
| dum-dum(noun, person, slang, stupidity) |
| dumbbell(noun, person, slang, stupidity) |
| dumbhead(noun, person, slang, stupidity) |
| dummkopf(noun, person, slang, stupidity) |
| dunce(noun, person, slang, stupidity) |
| dunderhead(noun, person, slang, stupidity) |
| eft(noun, animal, salamander, triton) |