Breadcrumb Home > Thesaurus > H Synonyms of heart murmur Find synonyms for: Noun1. heart murmur, cardiac murmur, murmur, symptomusage: an abnormal sound of the heart; sometimes a sign of abnormal function of the heart valvesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: glissade Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language