Disbeliever

n.

1.

One who disbelieves, or refuses belief; an unbeliever. Specifically, one who does not believe the Christian religion.

Noun

1.

disbeliever - someone who refuses to believe (as in a divinity) Synonyms: nonbeliever, unbeliever

atheist, disbelieve, discredit, irreligionist, materialist, nonbeliever, nonreligious person, unbeliever