Breadcrumb Home > Thesaurus > I Synonyms of indoor Find synonyms for: Adjective 1. indoor(prenominal) (vs. outdoor), interior usage: located, suited for, or taking place within a building; "indoor activities for a rainy day"; "an indoor pool" 2. indoor, interior (vs. exterior) usage: within doors; "an indoor setting" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of indoor (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: voxpopuli Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language