History
History
History
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US
Meaning:

(an act of) disloyalty or being unfaithful, especially to a wife or husband

disloyalty to an obligation

adultery affair betrayal duplicity treachery cheating faithlessness falseness falsity inconstancy lewdness perfidiousness perfidy treason unfaithfulness bad faith extramarital relations treacherousness two-timing
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INFIDELITY as in Wiktionary
INFIDELITY as in Wikipedia