adjective /nīˈēv/ 
naiver, comparative; naivest, superlative; naïver, comparative; naïvest, superlative

• (of a person or action) Showing a lack of experience, wisdom, or judgment
  • - the rather naive young man had been totally misled
• (of a person) Natural and unaffected; innocent
  • - Andy had a sweet, naive look when he smiled
• Of or denoting art produced in a straightforward style that deliberately rejects sophisticated artistic techniques and has a bold directness resembling a child's work, typically in bright colors with little or no perspective