| unallowable(adjective, forgivable) |
| unapologetic |
| unasked for |
| unbecoming(inappropriate, unfit, worthless, unwarranted, unworthy) |
| unbefitting(inappropriate, unfit, worthless, unworthy, undeserving) |
| uncalled-for(adjective, unreasonable, improper, unwarranted, iniquitous) |
| undeserved(adjective, unwarranted, unnecessary, iniquitous, unjust) |
| undesirable(insufferable, unbearable) |
| unessential(unwarranted, unjustified, undeserved) |
| unethical(adjective, dishonest, immoral, unwarranted, dishonorable) |
| unjust(adjective, wrong, unwarranted, unnecessary, iniquitous) |
| unlawful(adjective, cruel, unreasonable, dishonest, immoral) |
| unmerited(adjective, wrong, vile, inappropriate, unfit) |
| unnecessary(adjective, unwarranted, unjustified, undeserved) |
| unpermissible(adjective, forgivable) |
| unprincipled(adjective, cruel, unreasonable, dishonest, immoral) |
| unprovoked(adjective, unwarranted, unnecessary, unjustified, undeserved) |
| unrestrained |
| unrightful(adjective, cruel, unreasonable, dishonest, immoral) |
| unscrupulous(adjective, cruel, unreasonable, dishonest, immoral) |