{i} unfaithfulness, adultery; lack of adherence to one's religion, disbelief, lack of faith
Unfaithfulness to the marriage vow or contract; violation of the marriage covenant by adultery
Want of faith or belief in some religious system; especially, a want of faith in, or disbelief of, the inspiration of the Scriptures, of the divine origin of Christianity
Breach of trust; unfaithfulness to a charge, or to moral obligation; treachery; deceit; as, the infidelity of a servant
Infidelity occurs when a person who is married or in a steady relationship has sex with another person. George ignored his partner's infidelities. infidelities when someone has sex with a person who is not their wife, husband, or partner
disapproval If one person refers to another as an infidel, the first person is hostile towards the second person because that person has a different religion or has no religion. a holy war, to drive the infidels and the non-believers out of this holy land. Infidel is also an adjective. He promised to continue the fight against infidel forces. an offensive word for someone who has a different religion from you (infidèle, from , from fidelis )
Someone who does not believe in the speaker's religion Christians described Muslims as infidels during the crusades, and Islamic fundamentalists use the term to denounce members of other faiths Osama bin Laden has referred to Americans as infidels
"In New York, one who does not believe in the Christian religion; in Constantinople, one who does A kind of scoundrel imperfectly reverent of, and penurious contributory to, divines, ecclesiastics, popes, parsons, canons, monks, presbyters, hierophants, prelates, abbes, nuns, missionaries, exhorters, deacons, friars, hadjis, high-priests, muezzins, brahmins, medicine-men, confessors, eminences, elders, primates, pilgrims, prophets, imams, archbishops, bishops, abbots, priors, preachers, padres, abbotesses, curates, patriarchs, diocesans, deans, archdeacons, hierarchs, postulants, scribes, sextons, reverences, revivalists, chaplains, novices, vicars, pastors, rabbis, lamas, cardinals, prioresses, suffragans, acolytes and rectors " [DD]
One who does not believe in the prevailing religious faith; especially, one who does not believe in the divine origin and authority of Christianity; a Mohammedan; a heathen; a freethinker