/ Thesaurus / F Synonyms of flecainide Find synonyms for: Noun1. flecainide, Tambocor, antiarrhythmic, antiarrhythmic drug, antiarrhythmic medicationusage: oral antiarrhythmic medication (trade name Tambocor) used as a last resort in treating arrhythmias; increases the risk of sudden death in heart attack patientsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language