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English definition of “interest”

interest

noun [C] (ADVANTAGE)   /ˈɪn·trəst, ˈɪn·tər·əst/
something that gives you what is important or necessary or helps you in some way: A union looks after the interests of its members. I was only acting in your interest (= to achieve what would help you).
(Definition of interest noun (ADVANTAGE) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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