unbeliever

Noun

unbeliever (plural unbelievers)

1. One who does not believe, particularly in a deity (used by believers to describe people who do not believe in the same deity or deities as themselves).
   • `Well, I suppose that we must try it,' I said; and the others assented in their various ways - Leo, as though it were the best joke in the world; Job, in respectful disgust; and Mahomed, with an invocation to the Prophet, and a comprehensive curse upon all unbelievers and their ways of thought and...1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887, →OCLC
   • I tried to persuade some of the men to come and save you, but they would not do it, saying: ‘Let the unbelievers kill one another if they wish. It is none of our affair, and if we go and interfere with Ali-ben-Ahmed’s plans we shall only stir up a fight with our own people.’1913, Edgar Rice Burroughs, The Return of Tarzan, New York: Ballantine Books, published 1963, page 86

   Synonyms:

   infidel, non-believer, nonbeliever, nullifidian