/ Thesaurus / J Synonyms of john muir Find synonyms for: Noun1. Muir, John Muirusage: United States naturalist (born in England) who advocated the creation of national parks (1838-1914)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language