/ Thesaurus / G Synonyms of genus trillium Find synonyms for: Noun1. genus Trillium, liliid monocot genususage: deciduous perennial herbs; sometimes placed in family LiliaceaeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: chicory Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language