/ Thesaurus / F Synonyms of flame nettle Find synonyms for: Noun1. coleus, flame nettle, herb, herbaceous plantusage: any of various Old World tropical plants of the genus Coleus having multicolored decorative leaves and spikes of blue flowersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language