Breadcrumb Home > Thesaurus > C Synonyms of catholicism Find synonyms for: Noun 1. Catholicism, Catholicity, Christianity, Christian religion usage: the beliefs and practices of a Catholic Church WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of catholicism (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: demagogue Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language