Breadcrumb Home > Thesaurus > K Synonyms of knapweed Find synonyms for: Noun 1. knapweed, centaury usage: any of various plants of the genus Centaurea having purple thistlelike flowers WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of knapweed (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: anomie Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language