/ Thesaurus / D Synonyms of derivative instrument Find synonyms for: Noun1. derivative instrument, derivative, legal document, legal instrument, official document, instrumentusage: a financial instrument whose value is based on another securityWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: heifer Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language