/ Thesaurus / L Synonyms of lysergic acid diethylamide Find synonyms for: Noun1. lysergic acid diethylamide, LSD, hallucinogen, hallucinogenic drug, psychedelic drug, psychodelic drug, drug of abuse, street drug, controlled substanceusage: a powerful hallucinogenic drug manufactured from lysergic acidWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: magnanimous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language