Source : Webster's Revised Unabridged Dictionary (1913)

Subversive \Sub*ver"sive\, a. [Cf. F. subversif.]
   Tending to subvert; having a tendency to overthrow and ruin.

         Lying is a vice subversive of the very ends and design
         of conversation.                         --Rogers.

Source : WordNet®

subversive
     adj : in opposition to a civil authority or government [syn: {insurgent},
            {seditious}]

subversive
     n : a radical supporter of political or social revolution [syn:
         {revolutionist}, {revolutionary}, {subverter}]