Breadcrumb Home > Thesaurus > J Synonyms of janitor Find synonyms for: Noun 1. janitor, custodian, keeper, steward usage: someone employed to clean and maintain a building WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of janitor (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: stasis Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language