| A | B |
|---|
| unequivocal | plain; very clear in meaning; unchanging |
| unethical | not conforming to approved standards of behavior, a socially accepted code, or professionaly endorsed principles and practices |
| ungainly | clumsy; awkward; hard to handle |
| unimpeachable | beyond doubt or reproach; unquestionable |
| unobtrusive | not readily noticeable; inconspicuous |
| unscathed | undamaged; unharmed |
| untenable | that which cannot be maintained or occupied; incapable of being defended or held |
| urbane | courteous; suave; polished |
| utopian | excellent, but existing only in fance or theory; given to dreams or schemes of perfection |
| vacillate | to sway unsteadily; to totter; to waver; to fluctuate |
