| disadvantageous(weak, stupid, idle, useless, incompetent) |
| dogmatic(obstinacy, misjudgment) |
| fanciful(adjective, doubtful, unlikely, implausible) |
| foolhardy(adjective, wild, strange, silly, foolish) |
| fussy |
| good-for-nothing(adjective, weak, stupid, idle, useless) |
| half-baked(silly, foolish, fantastic, unwise, unlikely) |
| idle(adjective, weak, stupid, useless, trivial) |
| improbable(adjective, wild, silly, unreasonable, useless) |
| inadequate(adjective, useless, unfit, impractical, hopeless) |
| inappropriate(adjective, silly, foolish, fantastic, useless) |
| incompetent(adjective, weak, stupid, idle, useless) |
| inoperative(adjective, weak, stupid, idle, useless) |
| insurmountable |
| irrational(adjective, rough, wild, silly, foolish) |
| nonfunctional(weak, wild, stupid, idle, incompetent) |
| not applicable(expression, adjective, silly, impractical, unreal) |
| out of the question(expression, adjective, idiom, unreasonable, useless) |
| purposeless(adjective, weak, stupid, idle, useless) |
| rash(adjective, foolish, crazy, irrational, outrageous) |