/ Thesaurus / E Synonyms of encainide Find synonyms for: Noun1. encainide, Enkaid, antiarrhythmic, antiarrhythmic drug, antiarrhythmic medicationusage: antiarrhythmic drug (trade name Enkaid) used to treat life-threatening arrhythmias but 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: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language