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English definition of “run sth up”

run sth up

(DEBT) phrasal verb with run     /rʌn/ verb (present participle running, past tense ran, past participle run)
If you run up a debt, you do things that cause you to owe a large amount of money: She stayed two weeks at the hotel and ran up a bill that she couldn't pay.Borrowing, lending and debt
(Definition of run sth up (DEBT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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