malignity

noun

Intense ill will or hatred; great malice.

An act or a feeling of great malice.

The condition or quality of being highly dangerous or injurious; deadliness.

The character or state of being malign; extreme enmity or evil disposition toward another, proceeding from baseness of heart; malice or malevolence; deep-rooted spite.

The quality of being malign or malignant; extreme evilness; heinousness; specifically, in pathology, virulence; malignancy.