not find1 [transitive] lose something/somebody to be unable to find something/somebody
SynonymmislayI've lost my keys.The tickets seem to have got lost.She lost her husband in the crowd.
have something/somebody taken away2 [transitive] lose something/somebody to have something/somebody taken away from you as a result of an accident, getting old, dying, etcShe lost a leg in a car crash.to lose your hair/teeth (= as a result of getting old)He's lost his job.Some families lost everything (= all they owned) in the flood.They lost both their sons (= they were killed) in the war.The ship was lost at sea (= it sank).Many people lost their lives (= were killed).3 [transitive] lose something (to somebody/something) to have something taken away by somebody/somethingThe company has lost a lot of business to its competitors.4 [transitive] lose something to have to give up something; to fail to keep somethingYou will lose your deposit if you cancel the order.Sit down or you'll lose your seat.
have less5 [transitive] lose something to have less and less of something, especially until you no longer have any of itHe lost his nerve at the last minute.She seemed to have lost interest in food.At that moment he lost his balance and fell.I've lost ten pounds since I started this diet.The train was losing speed.
not win6 [transitive, intransitive] to be defeated; to fail to win a competition, a court case, an argument, etclose something (to somebody) to lose a game/a race/an election/a battle/a warlose to somebody We lost to a stronger team.lose (something) (by something) He lost by less than 100 votes.
not keep7 [transitive, intransitive] to fail to keep something you want or need, especially money; to cause somebody to fail to keep somethinglose something The business is losing money.Poetry always loses something in translation.lose something (on something/by doing something) You have nothing to lose by telling the truth.lose on something/by doing something We lost on that deal.lose somebody something His carelessness lost him the job.
not understand/hear8 [transitive] lose something to fail to get, hear or understand somethingHis words were lost (= could not be heard) in the applause.9 [transitive] lose somebody (informal) to be no longer understood by somebodyI'm afraid you've lost me there.
escape10 [transitive] lose somebody/something to escape from somebody/something
Synonymevade, shake offWe managed to lose our pursuers in the darkness.
time11 [transitive] lose something to waste time or an opportunityWe lost twenty minutes changing a tyre.Hurry—there's no time to lose!He lost no time in setting out for London.12 [transitive, intransitive] lose (something) if a watch or clock loses or loses time, it goes too slowly or becomes a particular amount of time behind the correct timeThis clock loses two minutes a day.
Most idioms containing lose are at the entries for the nouns and adjectives in the idioms, for example lose your bearings is at bearing.
lose it(informal) to be unable to stop yourself from crying, laughing, etc; to become crazyThen she just lost it and started screaming.