/ Thesaurus / B Synonyms of beta blocker Find synonyms for: Noun1. beta blocker, beta-blocking agent, beta-adrenergic blocker, beta-adrenergic blocking agent, blocker, blocking agentusage: any of various drugs used in treating hypertension or arrhythmia; decreases force and rate of heart contractions by blocking beta-adrenergic receptors of the autonomic nervous systemWordNet 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