| faulty(adjective, feature, state, bad, wrong) |
| invalid(adjective, feature, state, wrong, fake) |
| illogical(adjective, feature, state, wrong, condition) |
| disabled(adjective, feature, state, condition, situation) |
| infirm(adjective, feature, state, condition, situation) |
| void(adjective, feature, state, condition, situation) |
| wrong(adjective, bad, correct, wrong, fake) |
| inaccurate(adjective, bad, correct, wrong, fake) |
| erroneous(adjective, bad, correct, wrong, fake) |
| improper(adjective, wrong, fake, rude, counterfeit) |
| false(adjective, bad, correct, wrong, fake) |
| inexact(adjective, bad, wrong, fake, false) |
| mistaken(verb, adjective, bad, correct, wrong) |
| untrue(adjective, bad, correct, wrong, fake) |
| fallacious(adjective, bad, correct, wrong, fake) |
| imprecise(adjective, wrong, false, improper, unsound) |
| amiss(noun, adjective, bad, wrong, rough) |
| unsound(adjective, bad, correct, wrong, fake) |
| flawed(adjective, wrong, poor, false, inferior) |
| unsuitable(adjective, wrong, rude, false, awkward) |