Breadcrumb Home > Thesaurus > B Synonyms of bun Find synonyms for: Noun1. bun, roll, bread, breadstuff, staff of lifeusage: small rounded bread either plain or sweetWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of bun (Dictionary) ✖ Related Content Daily Word Quiz: hegira Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language