Definition of infidelity
1 : lack of belief in a religion
2 a : unfaithfulness to a moral obligation : disloyalty b : the act or fact of having a romantic or sexual relationship with someone other than one's husband, wife, or partner
Examples of infidelity in a sentence
She was convinced that her husband was guilty of infidelity.
He has admitted to a number of marital infidelities.
First Known Use of infidelity
Seen and Heard
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