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
 
 

V

valley - n. a long area of land between higher areas of land

value - n. the quality of being useful, important or desired; the amount of money
that could be received if something is sold 

vegetable - n. a plant grown for food 

vehicle - n. anything on or in which a person or thing can travel or be transported,
especially anything on wheels; a car or truck 

version - n. the form of something with different details than earlier or later forms 

very - ad. extremely ("He was very late.") 

veto - v. to reject or refuse to approve 

vicious - ad. bad; dangerous; showing harm or hate 

victim - n. someone or something that is injured, killed or made to suffer; someone
who is tricked 

victory - n. a success in a fight or competition 

village - n. a very small town 

violate - v. to fail to obey or honor; to break (an agreement) 

violence - n. the use of force to cause injury, death or damage 

visit - v. to go to or come to a place for a short time for friendly or business reasons 

voice - n. the sound made by creatures, especially humans, for speaking 

volcano - n. a hill or mountain around a hole in the earth's surface that can explode,
sending hot, melted rock and ash into the air 

vote - v. to choose a candidate in an election; n. a choice or decision expressed by
the voice, by hand or by writing