| impossible(adjective, silly, ridiculous, absurd, impractical) |
| indiscreet(dull, weak, simple, silly, foolish) |
| injudicious(weak, simple, silly, foolish, unreasonable) |
| insignificant(adjective, value, silly, stupid, unimportant) |
| jackass(adjective, foolish) |
| kooky(adjective, weak, simple, silly, foolish) |
| maudlin |
| mirthful |
| noisy(adjective, meaningless) |
| obtuse(dull, unintelligent, witless) |
| off-the-wall(adjective, crazy, mad, odd, insane) |
| potty(silly, foolish, unwise) |
| purportless(adjective, value, silly, stupid, insignificant) |
| self-contradictory(adjective, absurd, absurdity) |
| simpleminded(dull, stupid, absurd, unintelligent, witless) |
| softheaded(adjective, knowledge, ability) |
| stolid(dull, unintelligent, witless) |
| thick(dull, ridiculous, absurd, outrageous, unintelligent) |
| undiscerning |
| unglued(adjective, crazy, mad, odd, insane) |