/ Thesaurus / P Synonyms of pea souper Find synonyms for: Noun1. pea soup, pea-souper, fogusage: a heavy thick yellow fogWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language