/ Thesaurus / J Synonyms of john charles fremont Find synonyms for: Noun1. Fremont, John C. Fremont, John Charles Fremontusage: United States explorer who mapped much of the American west and Northwest (1813-1890)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language