/ Thesaurus / M Synonyms of mennonitism Find synonyms for: Noun1. Mennonitism, Protestantismusage: system of beliefs and practices including belief in scriptural authority; plain dress; adult baptism; foot washing; restriction of marriage to members of the groupWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: confectionery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language