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English definition of “smarten up your act”

smarten up your act

mainly UK
to make more effort: Why are you always so late? You'll have to smarten up your act if you want to keep your job.Trying and making an effortEffort and expending energy
(Definition of smarten up your act from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “smarten up your act”

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