/ Thesaurus / B Synonyms of blue devils Find synonyms for: Noun1. blues, blue devils, megrims, vapors, vapours, depressionusage: a state of depression; "he had a bad case of the blues"Noun1. blues, blue devils, megrims, vapors, vapours, depressionusage: a coarse prickly European weed with spikes of blue flowers; naturalized in United States2. blueweed, blue devil, blue thistle, viper's bugloss, Echium vulgare, herb, herbaceous plantusage: 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: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language