/ Thesaurus / D Synonyms of dog star Find synonyms for: Noun1. Sirius, Dog Star, Canicula, Sothisusage: the brightest star in the sky; in Canis MajorWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: heifer Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language