/ Thesaurus / B Synonyms of bastard pimpernel Find synonyms for: Noun1. chaffweed, bastard pimpernel, false pimpernel, subshrub, suffrutexusage: weedy plant having short dry chafflike leavesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language