/ Thesaurus / O Synonyms of otc stock Find synonyms for: Noun1. over the counter stock, OTC stock, unlisted stock, unlisted security, over the counter security, OTC securityusage: stock that is not listed and traded on an organized exchangeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language