The noun form for the verb malign is malinger*, one who maligns. Other noun forms are malice or malignancy.
*not to be confused with the verb malinger, to pretend or exaggerate incapacity or illness to avoid duties or responsibilities; noun form malingerer, one who malingers.
The word malignant (evil, malicious) has the verb form "to malign" and the noun form "malignancy."
Malign
It is the deadliest form of skin cancer known.
malignant melanoma
The noun form for the adjective horrible is horribleness.
It is the deadliest form of skin cancer known.
The noun form of the adjective obedient is obedience.
The noun form of the adjective 'prosperous' is prosperousness.A related noun form is prosperity.
The noun form is punisher
noun form of religious
Implication is the noun form of "imply."
The noun form for the adjective glaring is glaringness. Another noun form is glare.