The Collaborative International Dictionary of English v.0.48:

Tasty \Tast"y\ (t[=a]st"[y^]), a. [Compar. Tastier
   (t[=a]st"[i^]*[~e]r); superl. Tastiest.]
   1. Having a good taste; -- applied to persons; as, a tasty
      woman. See Taste, n., 5.
      [1913 Webster]

   2. Being in conformity to the principles of good taste;
      elegant; as, tasty furniture; a tasty dress.

   Syn: tasteful[2].
        [1913 Webster]

WordNet (r) 3.0 (2006):

tasty
    adj 1: pleasing to the sense of taste; "a tasty morsel" [ant:
           tasteless]

Moby Thesaurus II by Grady Ward, 1.0:

41 Moby Thesaurus words for "tasty":
   agreeable, ambrosial, appetizing, dainty, delectable, delicate,
   delicious, delightful, exquisite, flavorful, flavorous, flavorsome,
   good, good to eat, good-tasting, gustable, gusty, juicy, likable,
   luscious, lush, mouth-watering, nectareous, nectarous, nice,
   of gourmet quality, palatable, pleasing, relishing, restrained,
   sapid, savorous, savory, scrumptious, subdued, succulent, tasteful,
   toothsome, toothy, unobtrusive, yummy