The Collaborative International Dictionary of English v.0.48:

Cute \Cute\ (k[=u]t), a. [An abbrev. of acute.]
   1. Clever; sharp; shrewd; ingenious; cunning. [Colloq.]
      [1913 Webster]

   2. pleasantly attractive, in a delicate way; -- said of
      children, young ladies, pet animals and some objects, but
      seldom of adults; as, a cute child; a cute kitten; a cute
      little house; a cute statue.
      [PJC]

   3. smart-alecky or impertinent; as, a cute remark.
      [PJC]

   4. affectedly clever. --RHUD
      [PJC]

WordNet (r) 3.0 (2006):

cute
    adj 1: attractive especially by means of smallness or prettiness
           or quaintness; "a cute kid with pigtails"; "a cute little
           apartment"; "cunning kittens"; "a cunning baby" [syn:
           cunning, cute]
    2: obviously contrived to charm; "an insufferably precious
       performance"; "a child with intolerably cute mannerisms"
       [syn: cute, precious]

Moby Thesaurus II by Grady Ward, 1.0:

101 Moby Thesaurus words for "cute":
   Daedalian, Machiavellian, Machiavellic, acute, adept, adorable,
   adroit, apt, arch, artful, artistic, astute, attractive,
   authoritative, beautiful, bravura, brilliant, cagey, canny, clean,
   clever, coordinated, crack, crackerjack, crafty, cunning, daedal,
   dainty, deceitful, deep, deep-laid, deft, delicate, designing,
   dexterous, dextrous, diplomatic, excellent, expert, fancy, feline,
   foxy, good, goodish, graceful, guileful, handy, ingenious,
   insidious, inventive, knowing, lovely, magisterial, masterful,
   masterly, mignon, neat, no mean, pawky, politic, pretty,
   professional, proficient, quick, quite some, ready, resourceful,
   scheming, serpentine, sharp, shifty, shrewd, skillful, slick,
   slippery, sly, smooth, snaky, sneaky, some, sophistical,
   statesmanlike, stealthy, strategic, stylish, subtile, subtle,
   supple, tactful, tactical, the compleat, the complete, trickish,
   tricksy, tricky, virtuoso, vulpine, wary, well-done, wily,
   workmanlike