/ Thesaurus / E Synonyms of exhaust system Find synonyms for: Noun1. exhaust, exhaust system, systemusage: system consisting of the parts of an engine through which burned gases or steam are dischargedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language