Breadcrumb Home > Thesaurus > P Synonyms of portsmouth Find synonyms for: Noun 1. Portsmouth usage: a port city in southeastern Virginia on the Elizabeth River opposite Norfolk; naval base; shipyards 2. Portsmouth usage: a port town in southeastern New Hampshire on the Atlantic Ocean 3. Portsmouth, Pompey usage: a port city in southern England on the English Channel; Britain's major naval base WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of portsmouth (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: terraincognita Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language