devilish
definition: in a playfully devilish manner
example: the socialists are further handicapped if they believe that capitalists are not only wicked but also devilishly clever
speech part: adverb
synonyms:
devilishly
definition: showing the cunning or ingenuity or wickedness typical of a devil
example: devilish schemes
speech part: adjective
synonyms:
diabolic
definition: playful in an appealingly bold way
example:
speech part: adjective