Synonyms for Antineoplastic (same or very similar meaning)
WordNet sense 1 (used in the treatment of cancer):
anticancer, antitumor, antitumourWordNet sense 2 (any of several drugs that control or kill neoplastic cells; used in chemotherapy to kill cancer cells; all have unpleasant side effects that may include nausea and vomiting and hair loss and suppression of bone marrow function):
antineoplastic drug, cancer drugFrom the ODE community, based on WordNetadd/edit