/ Thesaurus / B Synonyms of blue fleabane Find synonyms for: Noun1. blue fleabane, Erigeron acer, fleabaneusage: widespread weed with pale purple-blue flowersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: furtive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language