To be defeated in a contest.
snatch defeat from the jaws of victory
To suddenly lose a contest one seemed very likely to win, especially t…
lose the plot
To cease to behave in a consistent or rational manner.
lose one's head
To behave irrationally or to lose one's self-control, especially in a …
lose one's shirt
To lose all of one's money; to go broke; to undergo financial ruin or …
lose the number of one's mess
To die, to perish.
lose one's virginity
To have sexual intercourse for the first time.