/ Thesaurus / B Synonyms of blue false indigo Find synonyms for: Noun1. blue false indigo, Baptisia australis, wild indigo, false indigousage: wild indigo of the eastern United States having racemes of blue flowersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language