[ noun ] someone who refuses to believe (as in a divinity) <noun.person>
Unbeliever \Un`be*liev"er\, n. 1. One who does not believe; an incredulous person; a doubter; a skeptic.
2. A disbeliever; especially, one who does not believe that the Bible is a divine revelation, and holds that Christ was neither a divine nor a supernatural person; an infidel; a freethinker.
Syn: See {Infidel}.
Sometimes, when I'm faced with an unbeliever, an atheist, I am tempted to invite him to the greatest gourmet dinner that one could ever serve.