DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   naif
       adj 1: marked by or showing unaffected simplicity and lack of
              guile or worldly experience; "a teenager's naive
              ignorance of life"; "the naive assumption that things can
              only get better"; "this naive simple creature with wide
              friendly eyes so eager to believe appearances" [syn:
              naive, naif] [ant: sophisticated]
       n 1: a naive or inexperienced person