| insensitive(adjective, dull, sharp, rough, slow) |
| tiresome(adjective, dull, flat, property, ordinary) |
| empty-headed(adjective, simple, careless, indifferent, silly) |
| farcical(adjective, absurd) |
| gormless |
| half-witted(adjective, dull, weak, simple, slow) |
| humdrum(adjective, dull, flat, ordinary, dry) |
| loony(adjective, weak, simple, wrong, careless) |
| meaningless(adjective, dull, simple, slow, silly) |
| monotonous(adjective, dull, flat, ordinary, dry) |
| stupefied(adjective, dull, cold, intelligent, dead) |
| vacuous(adjective, dull, simple, slow, careless) |
| balmy(adjective, simple, wild, silly, foolish) |
| blockheaded(adjective, dull, simple, ability, slow) |
| childish(adjective, silly, foolish, rash, absurd) |
| dippy(adjective, weak, silly, foolish, crazy) |
| dullard |
| half ass |
| illogical(adjective, wrong, silly, foolish, crazy) |
| screwy(adjective, strange, silly, crazy, mad) |