lose lost (lôst, lŏst), los·ing , los·es tr. To be unsuccessful in retaining possession of; mislay: He's always losing his car keys.
To be deprived of (something one has had): lost her art collection in the fire; lost her job.
To be left alone or desolate because of the death of: lost his wife.
To be unable to keep alive: a doctor who has lost very few patients.
To let (oneself) become unable to find the way.
To remove (oneself), as from everyday reality into a fantasy world.
To elude or outdistance: lost their pursuers.
To be outdistanced by: chased the thieves but lost them.
To be unable to keep control or allegiance of: lost his temper at the meeting; is losing supporters by changing his mind.
To fail to win; fail in: lost the game; lost the court case.
To fail to use or take advantage of: Don't lose a chance to improve your position.
To fail to hear, see, or understand: We lost the plane in the fog. I lost her when she started speaking about thermodynamics.
To let (oneself) become unable to find the way.
To remove (oneself), as from everyday reality into a fantasy world.
To elude or outdistance: lost their pursuers.
To be outdistanced by: chased the thieves but lost them.
To rid oneself of: lost five pounds.
To consume aimlessly; waste: lost a week in idle occupations.
To wander from or become ignorant of: lose one's way.
To elude or outdistance: lost their pursuers.
To be outdistanced by: chased the thieves but lost them.
To become slow by (a specified amount of time). Used of a timepiece.
To cause or result in the loss of: Failure to reply to the advertisement lost her the job.
To cause to be destroyed. Usually used in the passive: Both planes were lost in the crash.
To cause to be damned.
intr. To suffer loss.
To be defeated.
To operate or run slow. Used of a timepiece.
Phrasal Verb(s): lose out To fail to achieve or receive an expected gain.Idiom(s): To lose control; blow up.
To become deranged or mentally disturbed.
To become less capable or proficient; decline.
Idiom(s): Idiom(s): To operate too slowly. Used of a timepiece.
To delay advancement.
losen , from Old English losian , to perish , from los , loss ; see leu- in Indo-European roots.]
(lōōz) 
