From Longman Dictionary of Contemporary Englishdevilishdev‧il‧ish /ˈdevəlɪʃ/ adjective 1 BAD BEHAVIOUR OR ACTIONS literary very bad, difficult, or unpleasant devilish schemes to cheat people2 seeming likely to cause trouble, but in a way that is amusing or attractive Dalton looked at her with a devilish grin.
Examples from the Corpus
devilish• That lack of balance too is devilish.• Charlton Heston plays Perry, complete with devilish beard, and he does everything but cackle with delight over his evilness.• Costner, with his easy grin, incipient beer belly, thinning hair and bright devilish eyes, plays broken-down convincingly.• A sound enough plan in theory, but in practice it turned out to be a devilish job.• We were cast into impenetrable blackness, with the rain still cascading down and that devilish thing on the loose!• The girl was alone and devilish thoughts were playing on his mind.• devilish torture techniques 