adjective (a)

• not straightforward or candid; giving a false appearance of frankness(adj.all)

  Synonym:
  disingenuous
  Antonym:
  artless, ingenuous
  

  source: wordnet30
• marked by skill in achieving a desired end especially with cunning or craft(adj.all)

  Example:
  The artful dodger.
  An artful choice of metaphors.
  

  Antonym:
  artless
  

  source: wordnet30
• Performed with, or characterized by, art or skill.(adjective)

  source: webster1913