/ Thesaurus / T Synonyms of tincture of opium Find synonyms for: Noun1. laudanum, tincture of opium, opiateusage: narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredientWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language