under the impression ----> get the impression
    under warranty ----> be broken
    understand ----> be sure // think
    underwater ----> on wet surface
    undo ----> all over again
    unforgivable ----> can't be forgiven
    unique ----> different
    Unless I can get out of sth.! ----> Sb. be not eager to do sth.
    unless sb. has to ----> only when necessary
    up to date ----> catch up on
    up to one's neck/eyes/ears in work ----> too busy
    upside down ----> not correctly
    use the stepstool ----> stand on sth.
    used sth. // dirt cheap ----> very inexpensive
    used to be so sociable and open ----> now act less friendly
    used to do sth. ----> no longer // once
    used to live in ----> has moved out of
    usually no ----> few
    vacuum cleaner ----> dirty
    vacuum the rug and polish the furniture ----> do some housework
    very impolite ----> show extremely poor manners
    very little ----> be limited
    wait after rush hour ----> leave later to avoid traffic
    wait for ----> happy
    wait on me ----> bother people
    wait till morning ----> do sth. tomorrow
    waive ----> make exemption from
    Walking is out of the question. // Do you have a car? ----> far away
    wandering aimlessly // carefully planed moves ----> planned their migrations
    want ----> welcome
    want to (A) before (B) ----> not going to (B) immediately
    want to go for a swim ----> would like to swim
    wash off the chemicals ----> clean vegetables with water
    waste indoors // make the most of sth. ----> spend some time outdoors
    waste one's money // team ... lose ----> This game won't be worth seeing.
    way ----> route
    We can't hear the singer very well from the balcony. ----> Her voice doesn't carry to the balcony.
    We hardly ever see them here. ----> They don't come here often.
    we would have all been late ----> kept us from being late
    wear glasses ----> poor vision
    wear out highways ----> the repair of public roads
    weekly ----> every week
    weigh a ton each ----> too heavy for her to lift
    well-dressed ----> be particular about
    what (out-of-the-way) place ----> where
    What for ----> why
    what happens to the atmosphere as a result of burning gasoline ----> air pollution
    what I don't understand is ----> I don't know
    what out-of-the-way place ----> where
    What? // You mean ... ----> surprise
    What's new with sb.? ----> How sb.'s been doing lately?
    when ... be over ----> after
    when sb. start working ----> in the future
    when the bus leaves ----> the departure time
    When will ... be ready? ----> I've waited too long for ...
    whittle ----> sculpt
    whole ----> entire // much
    whole weekend // haven't finished ----> very long
    Why get upset? ----> over-react
    Why not ----> anyway
    Why you wait it so long? ----> very useful
    will take a while to learn the ropes ----> be not familiar with the work yet
    win ... first ----> always lose
    window ----> light
    with all the other expense ----> can't really afford
    with finals coming up ----> near the end of the school year
    with traffic this heavy ----> not be able to drive quickly
    without ... dangerous ----> safe
    without affecting ----> relatively little harmful effect
    without breaking up ----> remain intact
    without one's assignment ----> not finish ones assignment
    without shouting ----> not to shout
    without sth. ----> unless sb. have sth.
    work ----> practice
    work force ----> worker
    work on ----> do
    work out ----> figure out // turn out
    work the machine ----> use the machine
    worry ----> be relieved
    worse ----> harder
    would ... sunny and warm // not ----> clouds and cool temperatures
    would be so easy ----> be unexpectedly difficult
    Would I ever! ----> like the suggestion
    wrap up ----> be finished with // be through with // be done with
    wrap up ----> complete // conclude // finish
    write ----> draft
    write to one's folks ----> correspond with one's relatives
    writing // composition ----> work
    you and a few hundred other people ----> many students
    You are telling me. ----> agree
    You could fry the egg on the sidewalk. ----> It's extremely hot outside.