lose

verb

1.
fail to keep or maintain (of a state)
Antonym:
keep
2.
fail to win
Agent:
loser
Antonym:
win
Derived from:
loser
3.
suffer the loss of a person through death or removal
4.
miss from one's possessions; lose sight of
Antonym:
find
Derived from:
losings
5.
allow to go out of sight or mind
6.
fail to make money in a business; make a loss or fail to profit
Agent:
loser
Derived from:
loser losings
7.
fail to get or obtain
Antonym:
win
8.
fail to perceive or to catch with the senses or the mind
9.
withdraw, as from reality
10.
be set at a disadvantage