| unauthenticated(adjective, error) |
| unbalanced(uneven, unhinged) |
| undecided(adjective, uncertain, nervous, doubtful, hesitant) |
| unethical(adjective, dishonest, immoral, rotten, fickle) |
| unpatriotic(adjective, fickle, untrue, unprincipled, treacherous) |
| unprotected |
| unrespectable(adjective, dishonest, shameful, disgraceful, crooked) |
| unsteadfast |
| vacillating(adjective, weak, uncertain, nervous, doubtful) |
| variable(adjective, weak, loose, uncertain, doubtful) |
| venal(adjective, mean, bad, base, dishonest) |
| wobbly(adjective, weak, uncertain, nervous, sensitive) |
| accident-sensitive(adjective, unreliable, insecure, treacherous, incalculable) |
| adulterine(adjective, false, fickle, untrue, unprincipled) |
| adulterous(adjective, false, fickle, untrue, unprincipled) |
| ambiguous(dishonest, unreliable, uneven, unbalanced, unhinged) |
| bad |
| betwixt and between(expression, adjective, idiom, uncertain, nervous) |
| biased |
| borderline(adjective, weak, uncertain, nervous, sensitive) |