/ Thesaurus / S Synonyms of sour grass Find synonyms for: Noun1. dock, sorrel, sour grass, herb, herbaceous plantusage: any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicineWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: jugular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language