/ Thesaurus / G Synonyms of great barrier reef Find synonyms for: Noun1. Great Barrier Reefusage: the largest coral reef in the world; in the Coral Sea off the northeastern coast of AustraliaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language