/ Thesaurus / T Synonyms of tranquillise Find synonyms for: Verb1. calm, calm down, quiet, tranquilize, tranquillize, tranquillise, quieten, lull, still, comfort, soothe, console, solaceusage: make calm or still; "quiet the dragons of worry and fear"2. sedate, calm, tranquilize, tranquillize, tranquillise, affectusage: cause to be calm or quiet as by administering a sedative to; "The patient must be sedated before the operation"WordNet 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