/ Thesaurus / O Synonyms of outside door Find synonyms for: Noun1. exterior door, outside door, doorway, door, room access, thresholdusage: a doorway that allows entrance to or exit from a buildingWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language