The Collaborative International Dictionary of English v.0.48:

Artistic \Ar*tis"tic\, Artistical \Ar*tis"tic*al\, a. [Cf. F.
   artistique, fr. artiste.]
   Of or pertaining to art or to artists; made in the manner of
   an artist; conformable to art; characterized by art; showing
   taste or skill. -- Ar*tis"tic*al*ly, adv.
   [1913 Webster]

WordNet (r) 3.0 (2006):

artistic
    adj 1: relating to or characteristic of art or artists; "his
           artistic background"
    2: satisfying aesthetic standards and sensibilities; "artistic
       workmanship"
    3: aesthetically pleasing; "an artistic flower arrangement"
       [syn: aesthetic, esthetic, artistic]

Moby Thesaurus II by Grady Ward, 1.0:

75 Moby Thesaurus words for "artistic":
   Attic, Daedalian, adept, adroit, aesthetic, apt, art-conscious,
   arty, authoritative, beautiful, bravura, brilliant, chaste, choice,
   classic, clean, clever, coordinated, crack, crackerjack, cunning,
   cute, daedal, deft, dexterous, dextrous, diplomatic, excellent,
   expert, fancy, good, goodish, graceful, handy, in good taste,
   ingenious, magisterial, masterful, masterly, neat, no mean,
   of choice, of consummate art, of quality, ornamental, painterly,
   pleasing, politic, professional, proficient, pure, quick, quiet,
   quite some, ready, resourceful, restrained, simple, skillful,
   slick, some, statesmanlike, stylish, subdued, tactful, tasteful,
   the compleat, the complete, unaffected, understated, unobtrusive,
   virtuoso, well-chosen, well-done, workmanlike