In a malignant manner.

Is Malignant a noun or verb?

noun, plural ma·lig·nan·cies for 2, 3. the quality or condition of being malignant. malignant character, behavior, action, or the like: the malignancies of war. a malignant tumor.

Is malignant an adjective or a noun?

malignant. / (məˈlɪɡnənt) / adjective. having or showing desire to harm others. tending to cause great harm; injurious.