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English definition of “not be sb's day”

not be sb's day

If it is not your day, you are having a difficult or unpleasant day: This really isn't my day - my wallet was stolen and now I've lost my car keys.Good luck and bad luck
(Definition of not be sb's day from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “not be sb's day”

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