canny impish ingenious intriguing mischievous roguish shrewd smart subtle arch artful astute bluffing cagey calculating captious conniving covert crafty crooked cunning deceitful deceptive delusive designing dishonest dishonorable dissembling double-dealing elusive foxy furtive guileful illusory insidious mean plotting scheming secret sharp shifty slick smooth sneaking stealthy traitorous treacherous tricky underhand unscrupulous wily