/ Thesaurus / I Synonyms of instrument of execution Find synonyms for: Noun1. instrument of execution, instrumentusage: an instrument designed and used to take the life of a condemned personWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language