lose

v. fail to keep possession of; mislay, misplace; be deprived of; be defeated, fail; be bereaved; suffer a loss; waste; miss; go in the wrong direction; become less effective or valuable, diminish

Verb
1. fail to keep or to maintain; cease to have, either physically or in an abstract sense; "She lost her purse when she left it unattended on her seat"
(antonym) keep, hold on
(hyponym) white-out
2. fail to win; "We lost the battle but we won the war"
(antonym) win
(hyponym) go down
(entail) compete, vie, contend
(derivation) failure, loser, nonstarter, unsuccessful person
3. suffer the loss of a person through death or removal; "She lost her husband in the war"; "The couple that wanted to adopt the child lost her when the biological parents claimed her"
(hypernym) suffer
4. place (something) where one cannot find it again; "I misplaced my eyeglasses"
(synonym) misplace, mislay
(hypernym) put, set, place, pose, position, lay
5. miss from one's possessions; lose sight of; "I've lost my glasses again!"
(antonym) find, regain
(hyponym) forget, leave
(derivation) losings, losses
6. allow to go out of sight; "The detective lost the man he was shadowing after he had to stop at a red light"
7. fail to make money in a business; make a loss or fail to profit; "I lost thousands of dollars on that bad investment!"; "The company turned a loss after the first year"
(synonym) turn a loss
(antonym) profit, turn a profit
(derivation) loser
8. fail to get or obtain; "I lost the opportunity to spend a year abroad"
(antonym) acquire, win, gain
9. retreat
(synonym) fall back, drop off, fall behind, recede
(hypernym) regress, retrograde, retrogress
10. fail to perceive or to catch with the senses or the mind; "I missed that remark"; "She missed his point"; "We lost part of what he said"
(synonym) miss
(hyponym) overlook
11. be set at a disadvantage; "This author really suffers in translation"
(synonym) suffer
(hypernym) worsen, decline
(verb-group) suffer

adj. loose, slack; cheeky, insolent, impudent

n. lot, amount, portion, share, quota; prize

adj. loose, free, slack; disconnected

v. draw lots for

v. acquit, declare innocent, set free; release (from a debt or duty); free, loosen, unfasten, slacken; solve, find the solution; undo, open; cause dissolution (Chemistry, Biology)

n. loess

(v. t.)
To wander from; to miss, so as not to be able to and; to go astray from; as, to lose one's way.
  

(v. t.)
To ruin; to destroy; as destroy; as, the ship was lost on the ledge.
  

(v. t.)
To prevent from gaining or obtaining.
  

(v. t.)
To part with unintentionally or unwillingly, as by accident, misfortune, negligence, penalty, forfeit, etc.; to be deprived of; as, to lose money from one's purse or pocket, or in business or gaming; to lose an arm or a leg by amputation; to lose men in battle.
  

(v. t.)
To fail to obtain or enjoy; to fail to gain or win; hence, to fail to catch with the mind or senses; to miss; as, I lost a part of what he said.
  

(v. t.)
To cease to have; to possess no longer; to suffer diminution of; as, to lose one's relish for anything; to lose one's health.
  

(v. t.)
To cause to part with; to deprive of.
  

(v. t.)
To be deprived of the view of; to cease to see or know the whereabouts of; as, he lost his companion in the crowd.
  

(v. t.)
Not to employ; to employ ineffectually; to throw away; to waste; to squander; as, to lose a day; to lose the benefits of instruction.
  

(v. i.)
To suffer loss, disadvantage, or defeat; to be worse off, esp. as the result of any kind of contest.