ingenuous

adjective5

1. •
   Naive and trusting.
2. •
   Demonstrating childlike simplicity.

   • "Do you mean to say you didn't leave your wife for another woman?" "Of course not." "On your word of honour?" I don't know why I asked for that. It was very ingenuous of me. — 1919
3. •
   Unsophisticated; clumsy or obvious.

   • […] Semitic agitation by stating 'the truth' in terms of facts and figures, the practice of self-criticism represented a well-intended but ingenuous effort to defend Jewry against anti-Semitism. — 1978
4. •
   Unable to mask one's feelings.
5. •
   Straightforward, candid, open, frank.