wily
adjective
full of, marked by, or proceeding from wiles; crafty; cunning.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
When, of a sudden, a madness seized on the unwily lover—pardonable, surely, if ghosts but knew how to pardon.
From Belcaro Being Essays on Sundry Aesthetical Questions by Vernon Lee