/ Thesaurus / B Synonyms of blackseed Find synonyms for: Noun1. smut grass, blackseed, carpet grass, Sporobolus poiretii, dropseed, drop-seedusage: grass native to West Indies but common in southern United States having tufted wiry stems often infested with a dark fungusWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language