/ Thesaurus / A Synonyms of agent orange Find synonyms for: Noun1. Agent Orange, herbicide, weedkiller, weed killerusage: a herbicide used in the Vietnam War to defoliate forest areasWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language