to harm a hair on someone's head
- idiom
- Informal
- Did anyone harm a hair on his head?
Examples
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" I wouldn't harm a hair on Bobbie's head.
Fiction book (1996) -
Don't worry, I promise I won't harm a hair on his head during the game.
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I promised my lord I would not harm a hair on your head.
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- If you harm a hair on her head... -
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I wouldn't harm a hair on his head!
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Meaning like not harming a hair on someone's head that I don't intend to.
-
She claims Ronnie Davison is crazy about Sabra and wouldn't harm a hair on her head.
Fiction book (2001) -
I would never harm a hair on your head; you're my best friend.
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She was shocked to hear that someone would even think to harm a hair on her friend's head.
Synonyms
To cause a bad effect on people or things
Antonyms
Surface Forms
Morphology
harm + a + hair + on + someone's + head
The phrase literally combines 'harm' with the tiny thing 'a hair on someone's head', so a learner can plausibly infer the intended meaning 'not harm even the slightest part of someone' from the constituents. However, the construction functions as an idiomatic intensifier meaning 'not harm someone at all', which is a conventionalized metaphorical use and may not be fully predictable to an average B1 learner without exposure.
Etymology
Harm a hair on someone's head may come from the simple picture of someone so safe that you would not even harm a single hair on their head. So the phrase means 'to not hurt someone at all'.