/ Thesaurus / G Synonyms of greenpeace Find synonyms for: Noun1. Greenpeaceusage: an international organization that works for environmental conservation and the preservation of endangered speciesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language