UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈluːz/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/luz/ ,USA pronunciation: respelling(lo̅o̅z)

Inflections of 'lose' (v): (⇒ conjugate)
v 3rd person singular
v pres pverb, present participle: -ing verb used descriptively or to form progressive verb--for example, "a singing bird," "It is singing."
v pastverb, past simple: Past tense--for example, "He saw the man." "She laughed."
v past pverb, past participle: Verb form used descriptively or to form verbs--for example, "the locked door," "The door has been locked."

WordReference Random House Learner's Dictionary of American English © 2020
lose /luz/USA pronunciation   v.,  lost/lɔst, lɑst/USA pronunciation  los•ing. 
  1. to come to be without, as through accident:[+ object]They lost all their belongings in the storm.
  2. to fail to keep, as by accident, usually temporarily:[+ object]I just lost a dime under this sofa.
  3. to suffer the taking away of:[+ object]to lose one's job.
  4. to experience the death of (someone):[not: be + ~-ing;  ~ + object]He had just lost his wife to cancer.
  5. (of a physician) to fail to preserve the life of (a patient):[+ object]The doctor lost a young patient.
  6. to fail to keep, preserve, or maintain:[+ object]to lose a fortune by gambling.
  7. (of a timepiece) to run slower by:[+ object]The watch loses three minutes a day.
  8. to come to have less (money) than before: [+ object]lost a million dollars on the deal.[no object]We lost on that deal.
  9. to get rid of:[+ object]to lose weight.
  10. to bring to destruction:[+ object;  usually: be + lost]Ship and crew were lost.
  11. to have (someone) slip from sight or awareness:[+ object]The detective lost the man she was following.
  12. to stray from:[+ object]to lose one's way.
  13. to waste:[+ object]We have lost enough time waiting.
  14. to fail to gain or win:[+ object]He lost the bet.
  15. to be defeated (in): [+ object]They lost four games in a row.[no object]Our team lost again, 6-0.
  16. to cause the loss of: [+ object + for + object]The delay lost the battle for them.[+ object + object]That delay lost them the battle.
  17. to allow (oneself) to be absorbed in something:[+ oneself]I had lost myself in thought.
  18. [+ object]
    • to fail to hear, understand, comprehend, or see:I've lost you; do you mind going over it again for me?
    • to cause this to happen:I'm afraid you've lost me; do you mind going over it one more time?
  19. lose out, [no object] to suffer defeat or loss:Our company lost out on the deal.
  1. Idiomslose it, to fail to maintain one's temper, composure, or control.

    lose is a verb, lost is an adjective, loss is a noun:I lost my keys. The lost sheep was found again. The company announced a small loss for the computer division.

WordReference Random House Unabridged Dictionary of American English © 2020
lose  (lo̅o̅z),USA pronunciation v.,  lost, los•ing. 
  1. to come to be without (something in one's possession or care), through accident, theft, etc., so that there is little or no prospect of recovery:I'm sure I've merely misplaced my hat, not lost it.
  2. to fail inadvertently to retain (something) in such a way that it cannot be immediately recovered:I just lost a dime under this sofa.
  3. to suffer the deprivation of:to lose one's job; to lose one's life.
  4. to be bereaved of by death:to lose a sister.
  5. to fail to keep, preserve, or maintain:to lose one's balance; to lose one's figure.
  6. (of a clock or watch) to run slower by:The watch loses three minutes a day.
  7. to give up;
    forfeit the possession of:to lose a fortune at the gaming table.
  8. to get rid of:to lose one's fear of the dark; to lose weight.
  9. to bring to destruction or ruin (usually used passively):Ship and crew were lost.
  10. to condemn to hell;
  11. to have slip from sight, hearing, attention, etc.:to lose him in the crowd.
  12. to stray from or become ignorant of (one's way, directions, etc.):to lose one's bearings.
  13. to leave far behind in a pursuit, race, etc.;
    outstrip:She managed to lose the other runners on the final lap of the race.
  14. to use to no purpose;
    waste:to lose time in waiting.
  15. to fail to have, get, catch, etc.;
    miss:to lose a bargain.
  16. to fail to win (a prize, stake, etc.):to lose a bet.
  17. to be defeated in (a game, lawsuit, battle, etc.):He has lost very few cases in his career as a lawyer.
  18. to cause the loss of:The delay lost the battle for them.
  19. to let (oneself ) go astray, miss the way, etc.:We lost ourselves in the woods.
  20. to allow (oneself ) to become absorbed or engrossed in something and oblivious to all else:I had lost myself in thought.
  21. (of a physician) to fail to preserve the life of (a patient).
  22. (of a woman) to fail to be delivered of (a live baby) because of miscarriage, complications in childbirth, etc.

  1. to suffer loss:to lose on a contract.
  2. to suffer defeat or fail to win, as in a contest, race, or game:We played well, but we lost.
  3. to depreciate in effectiveness or in some other essential quality:a classic that loses in translation.
  4. (of a clock, watch, etc.) to run slow.
  5. Idiomslose face. See  face (def. 30).
  6. lose out, to suffer defeat or loss;
    fail to obtain something desired:He got through the preliminaries, but lost out in the finals.
  • bef. 900; Middle English losen, Old English -lēosan; replacing Middle English lesen, itself also reflecting Old English -lēosan; cognate with German verlieren, Gothic fraliusan to lose. See loss

Collins Concise English Dictionary © HarperCollins Publishers::
lose /luːz/ vb (loses, losing, lost)(mainly tr)
  1. to part with or come to be without, as through theft, accident, negligence, etc
  2. to fail to keep or maintain: to lose one's balance
  3. to suffer the loss or deprivation of: to lose a parent
  4. to cease to have or possess
  5. to fail to get or make use of: to lose a chance
  6. (also intr) to fail to gain or win (a contest, game, etc): to lose the match
  7. to fail to see, hear, perceive, or understand: I lost the gist of his speech
  8. to waste: to lose money gambling
  9. to wander from so as to be unable to find: to lose one's way
  10. to cause the loss of: his delay lost him the battle
  11. to allow to go astray or out of sight: we lost him in the crowd
  12. (usually passive) to absorb or engross: he was lost in contemplation
  13. (usually passive) to cause the death or destruction of: two men were lost in the attack
  14. to outdistance or elude: he soon lost his pursuers
  15. (intransitive) to decrease or depreciate in value or effectiveness: poetry always loses in translation
  16. (also intr) (of a timepiece) to run slow (by a specified amount): the clock loses ten minutes every day
  17. (of a physician) to fail to sustain the life of (a patient)
  18. (of a woman) to fail to give birth to (a viable baby), esp as the result of a miscarriage
  19. slang to lose control of (the car), as on a bend: he lost it going into Woodcote
  20. lose itslang to lose control of oneself or one's temper
Etymology: Old English losian to perish; related to Old English -lēosan as in forlēosan to forfeit. Compare loose

ˈlosable adj ˈlosableness n
'lose' also found in these entries (note: many are not synonyms or translations):
Collocations: lose your [keys, phone, purse, wallet], lose your [self-esteem, self-confidence], lose control of your [emotions, feelings], more...

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