naive

adjective

1. 1

   not initiated; deficient in relevant experience

   it seemed a bizarre ceremony to uninitiated western eyes

   he took part in the experiment as a naive subject

2. 2

   lacking information or instruction

   lamentably unenlightened as to the laws

3. 3

   inexperienced

4. 4

   of or created by one without formal training; simple or naive in style

   primitive art such as that by Grandma Moses is often colorful and striking

5. 5

   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