lose one's shirt, to

lose one's shirt

Fig. to lose a lot of money; to lose all of one's assets (as if one had even lost one's shirt). I almost lost my shirt on that deal. I have to invest more wisely. No, I can't loan you $200. I just lost my shirt at the racetrack.
See also: lose, shirt
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

lose one's shirt

Face financial ruin, go bankrupt, as in He lost his shirt in the last recession. This expression implies one has lost even one's shirt. [Early 1900s]
See also: lose, shirt
The American Heritage® Dictionary of Idioms by Christine Ammer.

lose (one's) shirt

Slang
To lose everything one has or owns.
See also: lose, shirt
American Heritage® Dictionary of the English Language, Fifth Edition.

lose one's shirt, to

To lose everything. This term alludes to betting on or investing everything one owns in some venture, but at one time it meant to become very angry (in effect the opposite of keep your shirt on). The current cliché, aided and abetted by the Great Depression, is a twentieth-century locution. “He hit the market . . . about the time the bottom dropped out of it. He lost his shirt!” (E. B. Mann, Thirsty Range, 1935).
See also: lose
The Dictionary of Clichés by Christine Ammer
See also:
  • lose (one's) shirt
  • lose one’s shirt
  • lose one's shirt
  • lose shirt
  • lose your shirt
  • lose it
  • lose it, to
  • lose
  • lose (one's) head over (something)
  • lose (one's) head