| lamebrain(adjective, person, insult, description) |
| mentally dull(expression, person, slang, stupidity) |
| mentally slow(expression, person, slang, stupidity) |
| muddle headed(expression, person, slang, stupidity) |
| nuts(adjective, intellect, stupidity, regress) |
| pansy(adjective, intellect, stupidity, regress) |
| pigheaded(adjective, intellect, stupidity, regress) |
| po-faced(adjective, intellect, stupidity, regress) |
| preposterous(adjective, person, insult, description) |
| pudding-headed(adjective, intellect, stupidity, regress) |
| silly(adjective, person, insult, description) |
| slow witted(expression, person, slang, stupidity) |
| thick skulled(expression, person, slang, stupidity) |
| thick witted(expression, person, slang, stupidity) |
| thoughtless(adjective, character, trait, disadvantage) |
| timber-headed(adjective, intellect, stupidity, regress) |
| timber headed(expression, person, slang, stupidity) |
| wacky(adjective, person, insult, description) |
| witless(adjective, person, insult, description) |
| wooden headed(expression, person, slang, stupidity) |