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English definition of “infidelity”

infidelity

noun [C, U]     /ˌɪnfɪˈdeləti/
behaviour in which someone who is married or in a relationship has sex with someone who is not their wife, husband, or regular partnerDisloyalty, betrayal and treasonSexual activity in generalPhysical and sexual assault and abductionInfidelity in relationships
(Definition of infidelity noun from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “infidelity” in other dictionaries

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