the shirt off (one's) back

the shirt off (one's) back

Anything or everything one owns or has to offer. Those contractors will take the shirt off your back if you hire them. I mean, I paid them an exorbitant amount of money, and look at the shoddy work they did! I'm not surprised that Tammy loaned you money—she would give you the shirt off her back if you needed it.
See also: back, off, shirt
Farlex Dictionary of Idioms.

the shirt off your back

People talk about the shirt off your back to emphasize that they mean everything you own. I know you'd be ready to give the shirt off your back for a worthy cause. That woman'll have the shirt off your back.
See also: back, off, shirt
Collins COBUILD Idioms Dictionary, 3rd ed.

the shirt off your back

your last remaining possessions as offered to another person.
See also: back, off, shirt
Farlex Partner Idioms Dictionary

the ˌshirt off somebody’s ˈback

anything that somebody has, including the things they really need themselves, that somebody else takes from them or they are willing to give: He’s the type of person who would give the shirt off his back if he thought it would help.
See also: back, off, shirt
Farlex Partner Idioms Dictionary

the shirt off (one's) back

Slang
The maximum one is able to give or lose: The only thing those swindlers didn't take was the shirt off my back.
See also: back, off, shirt
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • the shirt off back
  • the shirt off somebody's back
  • the shirt off your back
  • have the shirt off (one's) back
  • would give (someone) the shirt off (one's) back
  • I see what you mean
  • give (someone) the shirt off (one's) back
  • give the shirt off back
  • give the shirt off one's back
  • button-down