mephistophelian
1. [ adjective ] showing the cunning or ingenuity or wickedness typical of a devil
Synonyms: devilish mephistophelean diabolical diabolic
Examples:

"devilish schemes" "the cold calculation and diabolic art of some statesmen" "the diabolical expression on his face" "a mephistophelian glint in his eye"

Related terms: evil
Similar spelling:   mephistophelean
  mephistopheles