/ Thesaurus / G Synonyms of greater knapweed Find synonyms for: Noun1. great knapweed, greater knapweed, Centaurea scabiosa, knapweedusage: tall European perennial having purple flower headsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language