Antonyms of adj malignant

1 sense of malignant

Sense 1
malignant (vs. benign) -- (dangerous to health; characterized by progressive and uncontrolled growth (especially of a tumor))

benign (vs. malignant) -- (not dangerous to health; not recurrent or progressive (especially of a tumor))

Similarity of adj malignant

1 sense of malignant

Sense 1
malignant (vs. benign) -- (dangerous to health; characterized by progressive and uncontrolled growth (especially of a tumor))
       => cancerous -- (relating to or affected with cancer; "a cancerous growth")