| unreliable(false, vague, insane, unhealthy) |
| unsafe(false, foolish, unstable, fantastic) |
| unstable(adjective, wrong, false, foolish, stupid) |
| ailing(unstable, shaky, insane, unhealthy) |
| dangerous(false, unstable, shaky, insane) |
| decrepit(false, unstable, shaky, insane) |
| delicate(unstable, shaky, insane, unhealthy) |
| diseased(unstable, shaky, insane, unhealthy) |
| fragile(false, unstable, shaky, insane) |
| frail |
| in poor health(expression, idiom, false, insane) |
| insecure(false, unstable, shaky, insane) |
| insubstantial(false, unstable, shaky, insane) |
| not solid(expression, false, unstable, insane) |
| poorly(unhealthy, frail) |
| rickety(unstable, shaky, insane, unhealthy) |
| shaky(unstable, insane, unhealthy, frail) |
| sick(unhealthy, frail) |
| tottering(unstable, shaky, insane, unhealthy) |
| unbacked(false, unstable, shaky, insane) |