/ Thesaurus / J Synonyms of joint direct attack munition Find synonyms for: Noun1. Joint Direct Attack Munition, JDAM, guidance system, guidance deviceusage: a pinpoint bomb guidance device that can be strapped to a gravity bomb thus converting dumb bombs into smart bombsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language