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English definition of “fink”

fink

noun [C] uk   /fɪŋk/ US informal us  
someone who tells secret and damaging information about someone else, or an unpleasant person: Kelly's such a fink - she told Mom I was smoking again.People who reveal secrets and tell talesUnpleasant people in generalUnpleasant men
(Definition of fink from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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