/ Thesaurus / P Synonyms of periwinkle plant derivative Find synonyms for: Noun1. periwinkle plant derivative, antineoplastic, antineoplastic drug, cancer drugusage: an antineoplastic drug used to treat some forms of cancerWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language