Breadcrumb Home > Thesaurus Cite Synonyms of yeast Find synonyms for: Noun1. yeast, barm, leaven, leaveningusage: a commercial leavening agent containing yeast cells; used to raise the dough in making bread and for fermenting beer or whiskey2. yeast, fungususage: any of various single-celled fungi that reproduce asexually by budding or divisionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.See also: yeast (Dictionary) Related Content Daily Word Quiz: persiflage Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Synonyms Index