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English definition of “at the drop of a hat”

at the drop of a hat

If you do something at the drop of a hat, you do it immediately without stopping to think about it: People will file lawsuits at the drop of a hat these days.
(Definition of at the drop of a hat from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “at the drop of a hat”

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