Breadcrumb Home > Thesaurus > C Synonyms of coos Find synonyms for: Noun 1. coo, cry usage: the sound made by a pigeon Verb 1. coo, murmur usage: speak softly or lovingly; "The mother who held her baby was cooing softly" 2. coo, utter, emit, let out, let loose usage: cry softly, as of pigeons WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of coos (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: spurious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language