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English definition of “big sb/sth up”

big sb/sth up

phrasal verb with big     /bɪɡ/ verb informal
to talk a lot about how excellent someone or something is, sometimes praising him, her, or it more than is deservedPraising and applaudingExaggerating and playing down
(Definition of big sb/sth up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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