/ Thesaurus / I Synonyms of improvised explosive device Find synonyms for: Noun1. improvised explosive device, I.E.D., IED, explosive deviceusage: an explosive device that is improvisedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language