slily

Was it possible that he had unknowingly uttered them aloud and Iris was now slily poking fun at him?

He will tread upon your corny toe, and then ask your pardon, looking all the while slily to his companion, who is in the secret.

Moir looked at him for a moment, then slily tiptoed toward the shelter tepee and threw up the flap.

"Now it is your turn to give a toast," said the vice-jailer, slily eyeing his victim.