Webster's Revised Unabridged Dictionary · 1913

Malignity

Malignity , noun

[French malignité, Latin malignitas.]

1.
The state or quality of being malignant; disposition to do evil; virulent enmity; malignancy; malice; spite.
2.
Virulence; deadly quality.
His physicians discerned an invincible malignity in his disease. — Hayward
3.
Extreme evilness of nature or influence; perniciousness; heinousness; as, the malignity of fraud. [Rare]