U

　　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

　　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

　　W

　　wait - v. to delay acting; to postpone

　　walk - v. to move by putting one foot in front of the other

　　wall - n. the side of a room or building formed by wood, stone or other material; a structure sometimes used to separate areas of land

　　want - v. to desire; to wish for; to need

　　war - n. fighting between nations, or groups in a nation, using weapons

　　warm - ad. almost hot; having or feeling some heat

　　warn - v. to tell of possible danger; to advise or inform about something bad that may happen

　　wash - v. to make clean, usually with water

　　waste - v. to spend or use without need or care; to make bad use of; n. a spending of money, time or effort with no value gained or returned; something thrown away as having no value; the liquid and solid substances that result from body processes and are passed out of the body

　　watch - v. to look at; to observe closely; to look and wait for

　　water - n. the liquid that falls from the sky as rain or is found in lakes, rivers and oceans

　　wave - v. to move or cause to move one way and the other, as a flag in the wind; to signal by moving the hand one way and the other; n. a large mass of water that forms and moves on the surface of a lake or ocean

　　way - n. a path on land or sea or in the air; how something is done; method

　　we - pro. two or more people, including the speaker or writer （"He and I will go together, and we will return together."）

　　weak - ad. having little power; easily broken, damaged or destroyed; opposite strong

　　wealth - n. a large amount of possessions, money or other things of value

　　weapon - n. anything used to cause injury or to kill during an attack, fight or war

　　wear - v. to have on the body, as clothes

　　weather - n. the condition of the atmosphere resulting from sun, wind, rain, heat or cold

　　week - n. a period of time equal to seven days

　　weigh - v. to measure how heavy someone or something is

　　welcome - v. to express happiness or pleasure when someone arrives or something develops

　　well - ad. in a way that is good or pleasing; in good health; n. a hole in the ground where water, gas or oil can be found

　　west - n. the direction in which the sun goes down

　　wet - ad. covered with water or other liquid; not dry

　　what - pro. used to ask about something or to ask for information about something （"What is this?"）; ad. whichor which kind （"He wants to know what you would like to drink."）

　　wheat - n. a grain used to make bread; the plant that produces the grain

　　wheel - n. a round structure that turns around a center

　　when - ad. at what time; at any time （"When will she come home?"）; conj. during or at the time （"I studied hard when I was in school."）

　　where - ad., conj. at, to or in what place （"Where is his house?" "The house where he lives is in the old part of the city."）

　　which - pro. used to ask about what one or what ones of a group of things or people （"Which program do you like best?" "Which students will take the test?"）

　　while - n. a space of time （"Please come to my house for a while."）; conj. at or during the same time （"It may not be a good idea to eat while you are running."）

　　white - ad. having the color like that of milk or snow

　　who - pro. what or which person or persons that （"Who wants to go?"）; the person or persons （"They are the ones who want to go."）

　　whole - ad. the complete amount; all together; not divided; not cut into pieces

　　why - ad. for what cause or reason （"Why did she do it?"）; conj. the reason for which （"I do not know why she did it."）

　　wide - ad. having a great distance from one side to the other; not limited

　　wife - n. a woman who is married

　　wild - ad. living and growing in natural conditions and not organized or supervised by humans; angry; uncontrolled

　　will - v. a word used with action words to show future action （"They will hold talks tomorrow."）

　　willing - ad. being ready or having a desire to （"They are willing to talk about the problem."）

　　win - v. to gain a victory; to defeat another or others in a competition, election or battle

　　wind - n. a strong movement of air

　　window - n. an opening in a wall to let in light and air, usually filled with glass winter - n. the coldest time of year, between autumn and spring

　　wire - n. a long, thin piece of metal used to hang objects or to carry electricity or electronic communications from one place to another

　　wise - ad. having much knowledge and understanding; able to use knowledge and understanding to make good or correct decisions

　　wish - v. to want; to express a desire for

　　with - prep. along or by the side of; together; using （"He fixed it with a tool."）; having （"the house with the red door"）

　　withdraw - v. to take or move out, away or back; to remove

　　without - prep. with no; not having or using; free from; not doing

　　woman - n. an adult female human

　　wonder - v. to ask oneself; to question （"She wonders if it is true."）; n. a feeling of surprise

　　wonderful - ad. causing wonder; especially good

　　wood - n. the solid material of which trees are made

　　word - n. one or more connected sounds that form a single part of a language

　　work - v. to use physical or mental effort to make or do something; n. the effort used to make or to do something; that which needs effort; the job one does to earn money

　　world - n. the earth; the people who live on the earth

　　worry - v. to be concerned; to continue thinking that something, possibly bad, can happen

　　worse - ad. more bad than

　　worth - n. value measured in money

　　wound - v. to injure; to hurt; to cause physical damage to a person or animal; n. an injury to the body of a human or animal in which the skin is usually cut or broken

　　wreck - v. to damage greatly; to destroy; n. anything that has been badly damaged or broken

　　wreckage - n. what remains of something severely damaged or destroyed

　　write - v. to use an instrument to make words appear on a surface, such as paper

　　wrong - ad. not correct; bad; not legal; opposite right