art·less 
(ärtlĭs)
(ärtlĭs)adj.
1. Having or displaying no guile or deceit; honest or sincere: an artless child. See Synonyms at naive.
2. Free of artificiality; natural: artless charm.
3. Lacking art, knowledge, or skill; uncultured and ignorant.
4. Poorly made or done; crude.
artless·ly adv.
artless·ness n.