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English definition of “be on your guard”

be on your guard

C2 to be careful to avoid being tricked or getting into a dangerous situation: You always have to be on your guard against pickpockets.Paying attention and being carefulCautious and vigilant
(Definition of be on your guard from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “be on your guard”

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