/ Thesaurus / B Synonyms of blue devil Find synonyms for: Noun1. blueweed, blue devil, blue thistle, viper's bugloss, Echium vulgare, herb, herbaceous plantusage: a coarse prickly European weed with spikes of blue flowers; naturalized in United States2. amobarbital sodium, blue, blue angel, blue devil, Amytal, amobarbitalusage: the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnoticWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language