malignantadjective · Level 3 SAT1Evil in nature or tending to do great harm or mischiefThe oncologist confirmed that the tumor was malignant and recommended immediate surgery.ModuleLevel 3RegisterargumentCollectionCollection 070SAT Complete planAlso in Collection 070inoperative, nebulose, preoccupied, repetitive, slumbrous, aeriform, everlasting, pestilent and 1 more