infidelity
- (countable, uncountable) Unfaithfulness in a marriage or an intimate (sexual or romantic) relationship: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.
- (countable, uncountable) Unfaithfulness in some other moral obligation.
- (countable, obsolete, uncountable) Lack of religious belief.
Frequency
Pronounced as (IPA)
/ˌɪnfɪˈdɛlɪti/
Etymology
From Middle English infidelite, from Middle French infidelité (modern French infidélité) and its etymon Latin īnfidēlitās. Equivalent to infidel + -ity.
lack of faith
incomplete understanding
breach of promise Perfidy
marital infidelity
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