| improbable(adjective, wild, unreasonable, useless, absurd) |
| inadaptable(adjective, useless, unfit, inapplicable) |
| inept(adjective, weak, stupid, useless, impractical) |
| kaput(adjective, useless, unfit) |
| meaningless(adjective, weak, poor, base, inferior) |
| obsolete |
| otiose |
| purposeless(adjective, weak, stupid, useless, impractical) |
| quixotic(adjective, wild, unreasonable, useless, absurd) |
| romantic(adjective, wild, unreasonable, useless, absurd) |
| stupid(adjective, weak, informal, useless, impractical) |
| theoretical(adjective, wild, unreasonable, useless, absurd) |
| unattainable(adjective, wild, unreasonable, useless, absurd) |
| unavailable(adjective, weak, stupid, useless, impractical) |
| unfeasible(adjective, wild, unreasonable, useless, absurd) |
| unnegotiable(adjective, used, impracticable) |
| unpractical(adjective, unreasonable, useless, unfit, unviable) |
| unrealistic(adjective, wild, unreasonable, useless, absurd) |
| visionary(adjective, wild, unreasonable, useless, absurd) |
| waste(adjective, weak, poor, base, inferior) |