| unequal |
of two or more things, not having the same amount, value, or quality; not equal. [3 definitions] |
| uneven |
not smooth, regular, or flat; rough or jagged. [5 definitions] |
| unfair |
not just or right; treating people in manner that is too harsh or that is unequal with the way others are treated. [2 definitions] |
| unfamiliar |
not known or experienced before; unusual; strange. [2 definitions] |
| unfasten |
to release from; undo; separate. |
| unfit |
not suitable or appropriate for some purpose. [3 definitions] |
| unfold |
to open or spread out from a folded condition. [4 definitions] |
| unfortunate |
having bad luck; unlucky. [3 definitions] |
| unfortunately |
used to express that an event being talked about is something unlucky or something that turned out badly. |
| unfriendly |
not friendly; distant, unpleasant, or mean to other people. [2 definitions] |
| unhappy |
not glad or cheerful; sad; full of gloom. [2 definitions] |
| unhealthy |
in bad health; ill. [2 definitions] |
| unheard-of |
never before known or considered; completely new. |
| uni- |
a prefix that means "one" or "single." |
| unicorn |
a mythical animal having the body of a horse and a single, long horn extending from its forehead. |
| uniform |
always the same; never changing. [3 definitions] |
| uniform resource locator |
an address identifying the location of a file on the Internet, commonly called a URL. A URL consists of the computer on which the file is located and the file's location on that computer. |
| unify |
to make into a single unit or thing; bring together; unite. |
| unimportant |
not powerful or respected. [2 definitions] |
| uninhabited |
not lived in or inhabited. |
| uninterested |
having no interest; indifferent. |