/ Thesaurus / S Synonyms of stock certificate Find synonyms for: Noun1. stock certificate, stock, security, certificateusage: a certificate documenting the shareholder's ownership in the corporation; "the value of his stocks doubled during the past year"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language