malignity noun3 •The quality of being malign or malignant; badness, evilness, monstrosity, depravity, maliciousness.His enjoyment of the spectacle I furnished, as he sat with his arms folded on the table, shaking his head at me and hugging himself, had a malignity in it that made me tremble. — 1860 •A non-benign cancer; a malignancy.The absence of any histological sign of malignity in the primary tumor and in the metastases, as observed in our patient, is remarkable. — 2005 •A group of goblins.There was a whole malignity‡ of goblins up on the roof, but if you wanted your clacks to fly fast, you didn’t use the term out loud. — 2013 formsmalignities