Breadcrumb Home > Dictionary > Index A Cite atheist: Meaning and Definition of Find definitions for: a•the•ist Pronunciation: (?'th?-ist), [key] ? n. a person who denies or disbelieves the existence of a supreme being or beings. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. See also: atheist (Thesaurus) atheism atheistic TrendingHere are the facts and trivia that people are buzzing about. February 2021 Current Events: US News The Berlin Conference and the Partition of Africa The Implied Powers of Congress The Women's March on Versailles Keeping Your Brain Active in a COVID-19 World The Manchu Related Content Daily Word Quiz: oleaginous Analogy of the Day: Today?s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language