| nonfunctional(adjective, wild, stupid, idle, useless) |
| preposterous(adjective, foolish, unreasonable, fantastic, useless) |
| unachievable(adjective, impossible) |
| unreasonable(adjective, useless, absurd, preposterous, impossible) |
| idealistic(adjective, wild, unreasonable, useless, absurd) |
| illogical(adjective, wild, unreasonable, useless, absurd) |
| quixotic(adjective, wild, silly, foolish, fantastic) |
| romantic(adjective, wild, unreasonable, useless, absurd) |
| unnegotiable(adjective, used, impracticable) |
| unsuitable(adjective, useless) |
| unsustainable |
| improbable(adjective, wild, silly, unreasonable, useless) |
| inaccessible(adjective, out, impossible) |
| inapplicable(adjective, wild, unreasonable, useless, absurd) |
| ineffective(adjective, weak, stupid, idle, useless) |
| unimaginable(adjective, impossible) |
| unpractical(adjective, unreasonable, unviable) |
| unthinkable(adjective, possible, impossible) |
| abstract(adjective, wild, unreasonable, useless, absurd) |
| fanciful |