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English definition of “jack sth up”

jack sth up

(INCREASE) informal disapproving phrasal verb with jack     /dʒæk/ verb
to increase the price of something suddenly and by a large amount: Once the tourists arrive, the restaurants jack up their prices.Value and price increases
(Definition of jack sth up (INCREASE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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