demonically,adv.|diːˈmɒnɪkəlɪ| [f. demonical a. + -ly2.] In a manner befitting a demon; superhumanly. 1926‘L. Malet’ Dogs of Want v. 124 He danced divinely. Perhaps it were more accurate to say demonically.1962I. Murdoch Unoff. Rose xxviii. 270 Keeping pace demonically with her love for Felix.