/ Thesaurus / S Synonyms of subacute bacterial endocarditis Find synonyms for: Noun1. subacute bacterial endocarditis, endocarditisusage: a chronic bacterial infection of the endocardium and heart valves; symptoms develop slowlyWordNet 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