Breadcrumb Home > Thesaurus > U Synonyms of usn Find synonyms for: Noun 1. United States Navy, US Navy, USN, Navy, agency, federal agency, government agency, bureau, office, authority usage: the navy of the United States of America; the agency that maintains and trains and equips combat-ready naval forces WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of usn (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: antebellum Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language