1) Artless 2) Basic 3) Bumpkinly 4) Callow 5) Corny 6) Earthy 7) Hick 8) Homespun 9) Immature 10) Innocent 11) Lowbrow 12) Naif 13) Naive 14) Plain 15) Rubes 16) Simple 17) Uncomplicated 18) Unworldly 19) Upcountry 
• (a.) Not sophisticated; pure; innocent; genuine.
Refers to condition; the book is fairly worn and has not been repaired. It can also refer to an incomplete manuscript that has been completed by using a different source or by someone besides the author. Unsophisticated can also refer to a book or pamphlet that is manufactured in an amateurish manner.
[adj] - not wise in the ways of the world
unworldly adjective not wise in the ways of the world; `either too unsophisticated or too honest to promise more than he could deliver`; `this helplessly unworldly woman`- Kate O`Brien
not sophisticated; simple; artless. · without complexity or refinements: a relatively unsophisticated mechanism. · unadulterated; pure; genuine.