The Collaborative International Dictionary of English v.0.48:

Countrified \Coun"tri*fied\ (k[u^]n"tr[i^]*f[imac]d), p. a.
   [Also spelled countryfied.]
   Having the appearance and manners of a rustic; rude; as,
   countrified clothes.
   [1913 Webster]

         As being one who took no pride,
         And was a deal too countrified.          --Lloyd.
   [1913 Webster]

   2. rendered in a manner resembling rural style; as,
      countrified rock music.
      [PJC]

   3. unsophisticated.
      [PJC]

WordNet (r) 3.0 (2006):

countrified
    adj 1: characteristic of rural life; "countrified clothes";
           "rustic awkwardness" [syn: countrified, countryfied,
           rustic]

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "countrified":
   agrestic, boorish, bucolic, campestral, churlish, cloddish,
   clodhopping, clownish, country, country-born, country-bred,
   farmerish, from the sticks, hayseed, hick, hicky, hobnailed,
   inurbane, loutish, lumpen, lumpish, outland, pastoral, provincial,
   rube, rustic, uncouth, uncultivated, uncultured, unpolished,
   unrefined, up-country, yokel, yokelish