/ Thesaurus / A Synonyms of antiarrhythmic medication Find synonyms for: Noun1. antiarrhythmic, antiarrhythmic drug, antiarrhythmic medication, medicine, medication, medicament, medicinal drugusage: a drug used to treat an abnormal heart rhythmWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language