Source : Webster's Revised Unabridged Dictionary (1913)

Disorganize \Dis*or"gan*ize\, v. t. [imp. & p. p.
   {Disorganized}; p. pr. & vb. n. {Disorganizing}.] [Pref. dis-
   + organize: cf. F. d['e]sorganiser.]
   To destroy the organic structure or regular system of (a
   government, a society, a party, etc.); to break up (what is
   organized); to throw into utter disorder; to disarrange.

         Lyford . . . attempted to disorganize the church.
                                                  --Eliot
                                                  (1809).

Source : WordNet®

disorganize
     v : remove the organization from [syn: {disorganise}] [ant: {organize},
          {organize}]