artless

adj

1. Having or displaying no guile, cunning, or deceit.

   “And why should I here suppress the delight I received from this amiable creature, in remarking each artless look, each motion of pure undissembled nature, betrayed by his wanton eyes”

   “I am convinced of her being an artless, amiable girl, with very good notions, very seriously good principles, and placing her happiness in the affections and utility of domestic life.”

   “What passions our friendships were in those old days, how artless and void of doubt!”

2. Free of artificiality; natural.

   “This pendant has artless charm.”

3. Lacking art, knowledge, or skill; uncultured and ignorant.
4. Poorly made or done; crude.