| insupportable(adjective, defended, verbal attack) |
| invalid(adjective, foolish, unreasonable, fantastic, irrational) |
| madcap(adjective, silly, crazy, zany) |
| monstrous |
| problematic |
| puerile(adjective, silly, foolish, stupid, fantastic) |
| purposeless(adjective, value, silly, stupid, insignificant) |
| question |
| screwball(adjective, silly, foolish, unwise) |
| singular |
| softheaded(adjective, knowledge, ability) |
| unfeasible(adjective, wild, unreasonable, useless, preposterous) |
| ungodly(adjective, extraordinary, unreasonable, inappropriate, ridiculous) |
| unmeaning(adjective, value, silly, stupid, insignificant) |
| unrealizable(adjective, unreasonable, impossible, unpractical, unfeasible) |
| unreasoned(foolish, stupid, senseless, irrational, arbitrary) |
| unsuitable(adjective, strange, odd, ridiculous, incompatible) |
| unusual(adjective, silly, foolish, stupid, crazy) |
| vacuous |
| whimsical(adjective, light, happy, perfect, strange) |