狡い[zurui] sly
狡知[kouchi] craft
狡猾[koukatsu] sly
狡休み[zuruyasumi] playing hookey
狡賢い[zurugashikoi] devious

狡ける[zurukeru] to shirk one's duties
狡智[kouchi] cunning
狡猾老獪[koukatsuroukai] sly and crafty
狡兎三窟[koutosankutsu] very shrewd in preparing a means of escape
怜悧狡猾[reirikoukatsu] cunning