/ Thesaurus / C Synonyms of centaurea imperialis Find synonyms for: Noun1. sweet sultan, Centaurea imperialis, flowerusage: perennial of mountains of Iran and Iraq; cultivated for its fragrant rose-pink flowersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language