| defective(adjective, wrong, poor, false, inferior) |
| erroneous(adjective, wrong, false, improper) |
| incorrect(adjective, wrong, poor, false, inferior) |
| fallacious(adjective, wrong, false, improper) |
| false(adjective, wrong, improper, incorrect) |
| inaccurate(adjective, wrong, false, inadequate) |
| illogical(adjective, weak, wrong, false, unstable) |
| specious(adjective, wrong, false, improper) |
| weak(adjective, poor, unhealthy, frail) |
| crazed(adjective, false, unstable, shaky) |
| incongruous(adjective, false, unstable, shaky) |
| dangerous(adjective, false, unstable, shaky) |
| decrepit(adjective, false, unstable, shaky) |
| demented(adjective, false, unstable, shaky) |
| deranged(adjective, false, unstable, shaky) |
| fragile(adjective, false, unstable, shaky) |
| frail(adjective, unhealthy, unreliable, broken) |
| insecure(adjective, false, unstable, shaky) |
| insubstantial(adjective, false, unstable, shaky) |
| lunatic(adjective, false, unstable, shaky) |