Malignancy

1. The state or quality of being malignant; extreme malevolence; bitter enmity; malice; as, malignancy of heart.
2. Unfavorableness; evil nature.
3. The state or quality of being malignant; extreme malevolence; bitter enmity; malice; as, malignancy of heart.
4. Virulence; tendency to a fatal issue; as, the malignancy of an ulcer or of a fever.
5. Virulence; tendency to a fatal issue; as, the malignancy of an ulcer or of a fever.
6. The state of being a malignant.
7. The state of being a malignant.
8. Unfavorableness; evil nature.