The Collaborative International Dictionary
Diabolize \Di*ab"o*lize\, v. t. To render diabolical. [R.]
Wiktionary
alt. (context archaic English) to represent as diabolical vb. (context archaic English) to represent as diabolical
WordNet
Usage examples of "diabolize".
But it was maintained that so many dehumanizing ideas were mixed up with his conceptions of man, and so many diabolizing attributes embodied in his imagination of the Deity, that his system of beliefs was tainted throughout by them, and that the fact of his being so remarkable a logician recoiled on the premises which pointed his inexorable syllogisms to such revolting conclusions.
If no one else knew Sana, if she were, to the rest of Denver, now only a diabolized assailant come up out of the darkness of the societal unconscious to rend all that was intellectually pure and spiritually sanitary, the Elves knew her, and they knew lies when they heard them.