infidelity
//ˌɪnfɪˈdɛlɪti//
Noun
infidelitySingular
infidelitiesPlural
1
The act or state of being unfaithful to a spouse or romantic partner, especially through sexual relations with another person.
His infidelity destroyed their marriage.
2
Lack of religious faith or belief; disbelief in a particular religion.
His infidelity to the church caused tension with his devout family.
3
Disloyalty or breach of trust in general.
The company's infidelity to its original mission disappointed many loyal customers.