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English definition of “interest”

interest

noun [C usually plural, U] (ADVANTAGE)    /ˈɪn.trəst/ US  /-trɪst/
C1 something that brings advantages to or affects someone or something: A union looks after the interests of its members. It's in his interests to keep careful records. In the interests of safety, please do not smoke. Despite what you think, I'm only acting in your best interests (= doing what is best for you). → See also vested interestHelping and co-operating
(Definition of interest noun (ADVANTAGE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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