/ Dictionary / Index A apostatize: Meaning and Definition of Find definitions for: a•pos•ta•tize Pronunciation: (u-pos'tu-tīz"), [key] — -tized, -tiz•ing. to commit apostasy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: apostatize (Thesaurus) apostate a posteriori Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language