| incorrect(adjective, bad, correct, wrong, fake) |
| false(adjective, bad, correct, wrong, fake) |
| erroneous(adjective, bad, correct, wrong, fake) |
| faulty(adjective, bad, wrong, fake, false) |
| fallacious(adjective, bad, correct, wrong, fake) |
| unsound(adjective, bad, correct, wrong, fake) |
| flawed(adjective, wrong, false, inadequate) |
| specious(adjective, bad, wrong, fake, false) |
| unreliable(adjective, wrong, false, true) |
| illogical(adjective, wrong, false, insane) |
| invalid(adjective, wrong, fake, false, counterfeit) |
| incongruous(wrong, false, awkward, insane) |
| frail(unhealthy, broken, defective, broken-down) |
| sick(improper, unhealthy, frail, broken) |
| unstable(adjective, false, sick, insane) |
| unsteady(adjective, false, unstable, sick) |
| unsubstantial(bad, false, insane, unhealthy) |
| weak(adjective, false, inadequate, sick) |
| ailing(unhealthy, frail) |
| crazed(false, insane, unhealthy, frail) |