(a.) Full of tricks, or stratagems; clever\; using craft or stratagem to accomplish a purpose; mischievously artful; subtle.

Byzantine Machiavellian Machiavellic acute arch artful astute cagey calculating canny chiseling clever collusive covinous crafty cunning cute deceitful deep deep-laid designing devious diplomatic FALSE falsehearted feline finagling foxy fraudulent furtive guileful indirect ingenious insidious inventive knowing pawky politic ready resourceful sagacious scheming serpentine sharp shifty shrewd slick slippery sly smooth snaky sneaky sophistical stealthy strategic subtile subtle supple surreptitious tactical treacherous trickish tricksy tricky two-faced underhand underhanded vulpine wary