| unique |
being the only one of its type; sole; single. [5 definitions] |
| unison |
(prec. by "in") the simultaneous sounding of voices, or of musical tones in the same pitch or in octaves. [2 definitions] |
| unit |
any of a number of similar things that function for or serve the same purpose. [4 definitions] |
| unite |
to join together into a whole; combine. [5 definitions] |
| united |
joined into or made to act as a whole. [2 definitions] |
| United Arab Emirates |
an East Arabian country comprising seven Arab sheikdoms; Trucial States (usu. prec. by "the"). |
| United Kingdom |
a northwestern European country between the Atlantic Ocean and the North Sea, comprising Great Britain (England, Scotland, and Wales) and Northern Ireland; United Kingdom of Great Britain and Northern Ireland (usu. prec. by, "the"). |
| United Nations |
(used with a sing. or pl. verb) an international organization founded in 1945 to promote world peace, security, cooperation, and understanding. |
| United States |
a North American country extending from the Atlantic to the Pacific between Canada and Mexico and including Alaska and Hawaii, also known as "United States of America" (usu. prec. by, "the"). |
| United States of America |
a North American country extending from the Atlantic to the Pacific between Canada and Mexico and including Alaska and Hawaii, also known as "United States" (usu. prec. by, "the"). |
| unity |
the state of being a single unit; oneness. [5 definitions] |
| universal |
of, relating to, or characteristic of the whole world or the world's population. [6 definitions] |
| universe |
all matter and space in existence, including the earth and the heavens. [3 definitions] |
| university |
an educational institution devoted to learning and research and authorized to award degrees on both the graduate and undergraduate levels. |
| unkind |
lacking in kindness or sympathy; harsh. |
| unknown |
not known; undetermined; unfamiliar. [2 definitions] |
| unlawful |
not permitted by law; illegal. |
| unless |
except under the condition that; except if. [3 definitions] |
| unlike |
not alike or equal; different; unequal. [3 definitions] |
| unlimited |
having no limits or restrictions. [3 definitions] |
| unload |
to remove the load from. [6 definitions] |