/ Thesaurus / J Synonyms of john jay Find synonyms for: Noun1. Jay, John Jayusage: United States diplomat and jurist who negotiated peace treaties with Britain and served as the first chief justice of the United States Supreme Court (1745-1829)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language