/məˈlɪgnənt ||; məˈlɪgnənt/adj (used about a disease (cancer) that spreads in the body, or a growing mass (a tumour) caused by disease) likely to cause death if not controlled （指癌或肿瘤）恶性的，致命的: He has a malignant brain tumour. 他患了恶性脑瘤。 [OPP] benign 反义词为benign