shirt off someone's back
- idiom
- Informal
- Whenever someone is in trouble, she would gladly give the shirt off her back to help.
Examples
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He is the kind of person who would give you the shirt off his back if you needed it.
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Give you the shirt off his back.
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That man would give the shirt off his back to ensure his friends are taken care of.
Synonyms
So generous that they would give almost everything to help others
Giving money or help freely without holding back
A person who gives money, time, or help freely to others
Willing to share money, time, or help with others
Antonyms
How Generous
Surface Forms
Morphology
shirt + off + someone's + back
The expression creates a clear literal image — removing a shirt from someone's back to give it — so a learner who knows 'shirt', 'off', 'someone's' and 'back' can infer a sense of giving or donating personal possessions. However, the idiomatic, hyperbolic meaning 'extremely generous; willing to give anything' is a figurative extension that is not fully predictable from the parts alone, so it is only partially transparent.
Etymology
Shirt off someone's back paints a clear picture: someone taking the shirt right off a person's back, leaving them with nothing to wear. So it means 'willing to give anything to help others'.