viperousness

Example:His vicious remarks carried the venom of his viperousness.

Definition:Poison that can be injected or transmitted through a bite, sting, or other percutaneous mean; the acrid, irritating principle of poisons; the nature of such a substance or quality pertaining to it; spite; rancor; animosity.

Example:Her viperousness was a manifestation of her deep-seated malice.

Definition:Intentional inflicting of harm, or anger, often sending a message or simply a mean act; wanting evil with enduring or long-term consequences, as in revenge; often underhanded or sneaky hostility.