The Collaborative International Dictionary of English v.0.48:

Unsophisticate \Un`so*phis"ti*cate\, Unsophisticated
\Un`so*phis"ti*ca`ted\, a.
   Not sophisticated; pure; innocent; genuine.
   [1913 Webster] -- Un`so*phis"ti*ca`ted*ness, n.
   [1913 Webster]