sly
adjective
°Artfully cunning; secretly mischievous; wily.
°Dexterous in performing an action, so as to escape notice; nimble; skillful; cautious; shrewd; knowing; — in a good sense.
verb
°Slyly.
synonyms: artful, cunning, knowing, sharp more» , crafty, shrewd, shifty, sly as a fox, slim, wily