adjective

clever at achieving one’s aims by indirect or deceitful methods.

a crafty crook faked an injury to escape from prison

cunning,guileful,wily,artful,devious,sly,tricky,duplicitous,dishonest,underhand,cheating,deceitful,Janus-faced,sharp,scheming,calculating,designing,evasive,shrewd,astute,canny,foxy,slim,subtle