naive

/naɪˈiv/
adjective
  1. Lacking experience, wisdom, or judgment; too willing to believe that people are good or honest.
    • His naive trust in strangers sometimes gets him into trouble.
    • She was naive to think that everyone would follow the rules without being reminded.
    • It's naive to believe that one person can solve all the world's problems alone.
  2. Showing a lack of sophistication or critical thinking; simple or innocent in a way that is not realistic.
    • The movie's plot was charming but a bit naive in its view of love.
    • Her naive questions revealed that she had never traveled outside her small town.
    • The politician's naive promises were quickly criticized by experts.