| faulty(adjective, feature, state, bad, wrong) |
| invalid(adjective, feature, state, wrong, fake) |
| illogical(adjective, feature, state, wrong, condition) |
| infirm(adjective, feature, state, condition, situation) |
| inaccurate(adjective, bad, correct, wrong, fake) |
| erroneous(adjective, bad, correct, wrong, fake) |
| false(adjective, bad, correct, wrong, fake) |
| fallacious(adjective, bad, correct, wrong, fake) |
| unsound(adjective, bad, correct, wrong, fake) |
| flawed(adjective, wrong, poor, false, inferior) |
| specious(adjective, bad, wrong, fake, false) |
| incongruous(adjective, wrong, false, awkward, suitable) |
| unreliable(adjective, wrong, false, sick) |
| unwell(unhealthy, frail) |
| weak(adjective, false, unstable, sick) |
| decrepit(adjective, false, inadequate, sick) |
| mad(false, insane, unhealthy, irrational) |
| poorly(adjective, inadequate, sick, useless) |
| unhealthy(adjective, false, inadequate, sick) |
| unsubstantial(bad, false, insane, unhealthy) |