Breadcrumb Home > Dictionary > Index A atheist: Meaning and Definition of Find definitions for: a•the•ist Pronunciation: (ā'thē-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. The Book of Philippians: Summary Current Events This Week: May 2023 Preamble of the United Nations Charter Queen Victoria Books of the Bible: New Testament Books in Order The 88 Recognized Constellations ✖ Related Content Daily Word Quiz: panache Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language