Breadcrumb Home > Thesaurus > U Synonyms of undersell Find synonyms for: Verb1. undersell, undercut, sellusage: sell cheaper than one's competitionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of undersell (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