to lose

to disappear; to fade away

to be missing or unaccounted for

financial or material damage sustained

to feel sad or let down because expectations were not met

to not succeed in an endeavor or task; a failure (e.g., an experiment or plan)

Excuse me, I must be leaving now.

to make a mistake or a lapse in judgment or action

to lose one's love, undergo a breakup, or feel jilted in a romantic relationship

to suffer from insomnia

to lose one's job; the state of being unemployed

to lose an abstract quality, physical ability, or characteristic

to lose control; to go out of control

the loss or outflow of assets such as talented staff, investment funds, or members to other organizations

to lose one's way or sense of direction

to lose or misplace

to feel a sense of loss, frustration, or disappointment

to lose a competition, battle, or election; to suffer a setback

lack; deficiency; to be deficient or missing

deviating from the normal state or behaving in an eccentric or mentally unbalanced manner

to lose or inadvertently leave behind

a state of lacking equilibrium or proportion

to become invalid or no longer operative, as with laws, contracts, or medicine

(law) a failure to exercise proper care, resulting in unintended harm or legal liability

the personal profit and loss or the advantages and disadvantages of a situation

to lose balance or coordination; to become dysfunctional or disordered

to lose blood from the body

to act discourteously or behave rudely

owner of something lost or stolen

to lose one's eyesight or become blind

to be defeated in a contest or to make a miscalculation or unwise move in a task

to have a serious accident involving a vehicle, such as a plane crash or shipwreck

to cause a loss of (decorum, dignity etc), often used in fixed expressions

to lose effectiveness or cease to function as intended, often referring to a system, policy, or biological sense

to miss or let a chance or opportunity slip by

can be regarded as or qualifies as (usually something positive)

disappointed; frustrated

to lose property by theft; to have one's possessions stolen

to neglect one's duty; to be guilty of dereliction of duty

to lose one's head out of fear

territory that has been lost to an enemy or rival

absolutely safe; foolproof; no risk of failure

to catch fire; to be on fire

loss of fidelity in signal, sound, or image reproduction

to break a promise

to cry out or exclaim involuntarily

to lose one's memory