SHIFTY

adj. tricky, artful, shrewd, canny, cunning, foxy, wily, sharp, devious, slick, evasive, smooth, slippery, scheming, designing, conniving, calculating, underhand(ed), conspiratorial, treacherous, traitorous, deceitful, deceiving, duplicitous, two-faced, Janus-faced, dishonest, crooked, untrustworthy, Colloq bent The shifty scoundrel gave me a bad cheque and did a moonlight flit