/ Thesaurus / M Synonyms of morning star Find synonyms for: Noun1. morning star, daystar, Phosphorus, Lucifer, planet, major planetusage: a planet (usually Venus) seen just before sunrise in the eastern skyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language