| A | B |
|---|
| undesirable | not desirable; objectionable |
| unearned | not earned; not deserved |
| unequal | not of the same size, strength, ability |
| unforgettable | that which can never be forgotten |
| unquestionable | not to be questioned, doubted, or disputed |
| unqualified | lacking necessary qualifications |
| unravel | to undo; to make clear or solve |
| unpopular | not liked or approved of by the public |
| unsubstantial | having no material substance |
| untimely | before the proper time; premature |
