/ Thesaurus / B Synonyms of bulbous iris Find synonyms for: Noun1. bulbous iris, iris, flag, fleur-de-lis, sword lilyusage: any of various irises having a rootstock formed like a bulbWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language