| Apostatize (v. i.) To renounce totally a religious belief once professed; to forsake one's church, the faith or principles once held, or the party to which one has previously adhered. Thesaurus Entries apostacize, betray, bolt, break away, change sides, defect, degenerate, desert, fall away, fall off, go over, let down, pull out, rat, renegade, renege, renounce, repudiate, run out on, secede, sell out, switch, switch over, tergiversate, turn, turn against, turn cloak, turn traitor |