/ Thesaurus / M Synonyms of mandaeanism Find synonyms for: Noun1. Mandaeanism, Mandeanism, Gnosticismusage: a Gnostic religion originating the 2nd and 3rd centuries that believes John the Baptist was the Messiah and that incorporates Jewish and Christian elements into a framework of dualistic beliefsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: lyre Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language