/ Thesaurus / J Synonyms of joseph priestley Find synonyms for: Noun1. Priestley, Joseph Priestleyusage: English chemist who isolated many gases and discovered oxygen (independently of Scheele) (1733-1804)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language