/ Thesaurus / C Synonyms of carduus crispus Find synonyms for: Noun1. welted thistle, Carduus crispus, thistleusage: European biennial introduced in North America having flower heads in crowded clusters at ends of branchesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: knead Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language