faithlessness

/ˈfeɪθ.ləs.nəs/

NOUN

1. Disloyalty and betrayal

The quality or state of being disloyal, untrustworthy, or untrue to a person, promise, duty, or allegiance.

The act or quality of violating someone's trust, breaking a promise, or betraying a personal, professional, or political allegiance.

The act or state of being sexually or romantically unfaithful to a spouse or partner.

Her husband's faithlessness eventually brought their marriage to an end.
The novel explores the pain caused by jealousy and faithlessness in relationships.

The tendency to change one's loyalties, feelings, beliefs, or commitments frequently rather than remaining steady or dependable.

The politician's faithlessness made it difficult for voters to rely on his promises.
The faithlessness of public opinion frustrated the campaign organizers.

NOUN

The state of having no religious faith, or of lacking belief or confidence in religious teachings or principles.

The absence of religious belief or the condition of doubting or rejecting religious teachings, doctrines, or the existence of God.

The writer described the growing faithlessness of society toward traditional religious institutions.
His faithlessness was expressed through persistent doubt about religious doctrines.