Rancor
Rancor (ran"kẽr) , noun
[Old English rancour, Old French rancor, rancur, French rancune, from Latin rancor rancidity, rankness; tropically, an old grudge, rancor, from rancere to be rank or rancid.]
The deepest malignity or spite; deep-seated enmity or malice; inveterate hatred.
To stint rancour and dissencioun.
It would not be easy to conceive the passion, rancor, and malice of their tongues and hearts.
Rancor will out; proud prelate, in thy face
I see thy fury.
Rancor is that degree of malice which preys upon the possessor.