/ Thesaurus / S Synonyms of sour mash Find synonyms for: Noun1. sour mash, mashusage: a mash with optimum acidity for yeast fermentation; a mixture of old and new mash; used in distilling some whiskeys2. sour mash, sour mash whiskey, whiskey, whiskyusage: any whiskey distilled from sour mashWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language