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English definition of “duplicity”

duplicity

noun [U] uk   /djʊˈplɪs.ɪ.ti/ us    /duːˈplɪs.ə.t̬i/ formal
dishonest talk or behaviour, especially by saying different things to two people: They were accused of duplicity in their dealings with both sides.
(Definition of duplicity from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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