/ Thesaurus / G Synonyms of genus pennisetum Find synonyms for: Noun1. Pennisetum, genus Pennisetum, monocot genus, liliopsid genususage: a genus of Old World grassesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fortuitous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language