/ Thesaurus / M Synonyms of macropus giganteus Find synonyms for: Noun1. giant kangaroo, great grey kangaroo, Macropus giganteus, kangaroousage: very large greyish-brown Australian kangaroo formerly abundant in open wooded areasWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language