You searched for: “infidel
infidel (s) (noun), infidels (pl)
1. Anyone who does not believe in what the speaker or writer holds to be the true religion; an unbeliever; applied especially to Christianity or Islam.
2. A disbeliever in religion or divine revelation generally; especially one in a Christian country who professedly rejects or denies the divine origin and authority of Christianity; a professed unbeliever.
3. In Muslim use: a person who does not accept the Islamic faith; kaffir. Heard more often in the news as spoken by Muslims and applied even to Christians.
4. A person who has no religious beliefs; an unbeliever.
5. Loosely, anyone who disbelieves or doubts a particular theory, belief, creed, etc.; a skeptic.

Trust in Allah, but tie your camel.

—Arabian proverb

infidel: In New York, one who does not believe in the Christian religion; in Constantinople, one who does.

—Ambrose Bierce (1842-1914), The Devil's Dictionary, 1906.
This entry is located in the following unit: fid-, fidel- (page 4)
infidel, infidelity
infidel (IN fi duhl, IN fi del") (noun)
1. A person who does not believe in a religion which another person regards as the true religion: Even in modern times, we hear about someone who condemns another person of being an infidel.
2. An individual who does not profess a religious belief: As a free thinker, Jeremy thought of himself as an infidel with no religious affiliation.
infidelity (in" fi DEL i tee) (noun)
The act or fact of having a romantic or sexual relationship with someone other than one's husband, wife, or partner: Fay filed for divorce on the basis of her husband’s infidelity with a fellow worker.

Trudy was so distraught by her husband’s infidelity, that she completely lost her spiritual faith; she thought of herself as an infidel.