showing the cunning or ingenuity or wickedness typical of a devil;
"devilish schemes" "the cold calculation and diabolic art of some statesmen" "the diabolical expression on his face" "a mephistophelian glint in his eye"
extremely evil or cruel; expressive of cruelty or befitting hell;
"something demonic in him--something that could be cruel" "fires lit up a diabolic scene" "diabolical sorcerers under the influence of devils" "a fiendish despot" "hellish torture" "infernal instruments of war" "satanic cruelty" "unholy grimaces"
