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. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: anomie Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language