/ Dictionary / Index Q quash: Meaning and Definition of Find definitions for: quash Pronunciation: (kwosh), [key] to put down or suppress completely; quell; subdue: to quash a rebellion. to make void, annul, or set aside (a law, indictment, decision, etc.). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: quash (Thesaurus) quasar Quasheba 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