U
- under - prep. below; below the surface of; less than; as
called for by a law, agreement or system ("The river flows under the
bridge." "Such action is not permitted under the law.")
- understand - v. to know what is meant; to have knowledge of
- unite - v. to join together
- universe - n. all of space, including planets and stars
- university - n. a place of education that usually includes several colleges and research organizations
- unless - conj. except if it happens; on condition that ("I will not go, unless the rain stops.")
- until - conj. up to a time; before
- up - ad. to, in or at a higher position or value
- urge - v. to advise strongly; to make a great effort to get someone to do something
- urgent - ad. needing an immediate decision or action
- us - pro. the form of the word "we" used after a
preposition ("He said he would write to us.") or used as an object of a
verb ("They saw us yesterday.")
- use - v. to employ for a purpose; to put into action
- usual - ad. as is normal or common; as is most often done, seen or heard