/ Thesaurus / H Synonyms of harlequin opal Find synonyms for: Noun1. harlequin opal, opalusage: a reddish opal with small patches of brilliant colorWordNet 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