The Collaborative International Dictionary of English v.0.48:

Pawky \Paw"ky\, a. [Cf. AS. p[ae]cean to deceive.]
   Arch; cunning; sly. [Scot.] --Jamieson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pawky
    adj 1: cunning and sly; "the pawky rich old lady who incessantly
           scores off her parasitical descendants"- Punch

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "pawky":
   Byzantine, Machiavellian, Machiavellic, acute, arch, artful,
   astute, cagey, calculating, canny, careful, cautious, circumspect,
   clever, crafty, cunning, cute, deceitful, deep, deep-laid,
   deliberate, designing, devious, difficult, diplomatic, discreet,
   feline, finical, finicking, finicky, finikin, foxy, fuss-budgety,
   fussy, gingerly, guarded, guileful, hard to please, heedful,
   hesitant, ingenious, insidious, inventive, judicious, knowing,
   leaving out nothing, mindful, noncommittal, on guard,
   overlooking no possibility, pernickety, persnickety, politic,
   prudent, queasy, ready, regardful, resourceful, safe, scheming,
   serpentine, sharp, shifty, shrewd, slick, slippery, slow to act,
   sly, smooth, snaky, sneaky, sophistical, squeamish, stealthy,
   strategic, subtile, subtle, supple, tactical, tentative, thorough,
   trickish, tricksy, tricky, unadventurous, uncommunicative,
   undaring, unenterprising, unprecipitate, vulpine, wary, wily