Demonize \De"mon*ize\, v. t. [imp. & p. p. {Demonized}; p. pr. & vb. n. {Demonizing}.] [Cf. LL. daemonizare to be possessed by a demon, Gr. ?.] 1. To convert into a demon; to infuse the principles or fury of a demon into. 2. To control or possess by a demon.