Definition of "disbeliever" [dis•be•liev•er]

• One who disbelieves, one who does not believe. (noun)

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• "He is a disbeliever, which is just as bad as being a believer."
• "It must be noted that he had had fairly extensive experience of spiritualism; he had made regular experiments with Mrs. Haydon at his brother George's house (the paper on which these are recorded is undated, but it must have been before 1863); he was referred to as a disbeliever in an article in the "Pall Mall Gazette" during January"
• "Instead, the man seeking to rescue the children and his fellow citizens from inhumane conditions has been called a disbeliever on national TV."