nonbeliever

Từ điển WordNet v3.1 - WordNet Dictionary

noun

someone who refuses to believe (as in a divinity)
• Syn:
disbeliever, unbeliever
• Derivationally related forms:
disbelieve (for: disbeliever)
• Hypernyms:
nonreligious person
• Hyponyms:
atheist, irreligionist, materialist