wily, 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