| upright |
in a vertical or standing position. [6 definitions] |
| uprising |
the act or an instance of rebelling or rising up against authority. |
| uproar |
a loud, confused disturbance; commotion. [2 definitions] |
| uproot |
to pull up or tear out of the ground by the roots. [2 definitions] |
| upset |
to tip or turn over. [9 definitions] |
| upside down |
with the part that is usually underneath on top; inverted. |
| upstairs |
on or toward an upper floor; up the stairs. [3 definitions] |
| up to |
as far upward as. [7 definitions] |
| up-to-date |
having the most recent information; current. [2 definitions] |
| upward |
toward or to a higher position or place. [2 definitions] |
| Ural Mountains |
a mountain range in Russia, extending from the Arctic Ocean to near the Caspian Sea and forming a border between Europe and Asia; Urals. |
| uranium |
a heavy, silver-white radioactive metal that is one of the chemical elements. It is used to produce nuclear energy. (symbol: U) |
| Uranus |
the third largest planet in the solar system and seventh in distance from the sun. [2 definitions] |
| urban |
of or having to do with a city or town. |
| Urdu |
the main language of Pakistan and one of the important languages spoken in India. Spoken Urdu is similar to Hindi, a major language of India, but its way of writing is completely different and not all of the words are the same. |
| urge |
to push or drive forward or onward. [5 definitions] |
| urgent |
needing immediate action or attention. [2 definitions] |
| urine |
a substance made by the kidneys to carry waste out of the body. Urine comes out as a yellow liquid in mammals and as a partially solid substance in reptiles and birds. |
| URL |
the address of documents on the World Wide Web. "URL" is an abbreviation of "uniform resource locator." |
| urn |
a large vase with a base. [2 definitions] |
| Ursa Major |
a constellation in the northern sky, also called the Big Dipper. |