Breadcrumb Home > Thesaurus > B Synonyms of basement Find synonyms for: Noun 1. basement, cellar, floor, level, storey, story usage: the lowermost portion of a structure partly or wholly below ground level; often used for storage 2. basement, support usage: the ground floor facade or interior in Renaissance architecture WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of basement (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: inmediasres Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language