/ Thesaurus / G Synonyms of great dog Find synonyms for: Noun1. Canis Major, Great Dogusage: a constellation to the southeast of Orion; contains SiriusWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language