/ Thesaurus / M Synonyms of ms dos Find synonyms for: Noun1. MS-DOS, Microsoft disk operating systemusage: an operating system developed by Bill Gates for personal computersWordNet 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