| madcap(adjective, rough, foolish, crazy, irrational) |
| meaningless(weak, stupid, idle, useless, incompetent) |
| means |
| no good(expression, weak, stupid, idle, useless) |
| non-effective(adjective, useless, unfit) |
| non-serviceable(adjective, useless, unfit) |
| nonapplicable(adjective, inapplicable) |
| noneffective(adjective, useless, unfit) |
| nonpractical |
| nonsensical(silly, foolish, fantastic, impractical, unreal) |
| nonviable(wild, unreasonable, useless, absurd, unrealistic) |
| not feasible(expression, adjective, idiom, difficulty, impractical) |
| odd(silly, foolish, fantastic, unwise, impractical) |
| of no use(expression, idiom, weak, stupid, idle) |
| optimistic |
| otherworldly(wild, unreasonable, useless, absurd, unrealistic) |
| out-of-use(adjective, useless, unfit) |
| out of all reason(expression, idiom, silly, foolish, fantastic) |
| outrageous(adjective, rough, wild, strange, silly) |
| peculiar(silly, foolish, fantastic, unwise, impractical) |