infidelity

About 1.27 uses per million words.

Meaning

1. noun 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.
2. noun Unfaithfulness in some other moral obligation.
3. noun Lack of religious belief.

Similar words

unfaithfulness adultery affair cheating treachery disloyalty betrayal treason sin faithlessness

Often followed by

and of to is in was or on has

Word family

infidelities