/ Thesaurus / Z Synonyms of zero coupon security Find synonyms for: Noun1. zero-coupon security, zero coupon security, security, certificateusage: a security that makes no interest payments but instead is sold at a deep discount from its face valueWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language