naive /(nä*ēv")/

na·ive

naive

a.
  1. Having native or unaffected simplicity; ingenuous; artless; frank; as, naïve manners; a naïve person; naïve and unsophisticated remarks.
  2. Having a lack of knowledge, judgment, or experience; especially, lacking sophistication in judging the motives of others; credulous; as, a naive belief in the honesty of politicians.