Adjective
subversive -
in opposition to a civil authority or government
insurgent ,
seditious
disloyal deserting your allegiance or duty to leader or cause or principle; "disloyal aides revealed his indiscretions to the papers"
Noun
subversive -
a radical supporter of political or social revolution
revolutionist ,
revolutionary ,
subverter
radical a character conveying the lexical meaning of a logogram
counter-revolutionist ,
counterrevolutionary ,
counterrevolutionist a revolutionary whose aim is to reverse the changes introduced by an earlier revolution
dynamiter ,
dynamitist a person who uses dynamite in a revolutionary cause
girondin ,
girondist a member of the moderate republican party that was in power during the French Revolution; the Girondists were overthrown by their more radical rivals the Jacobins
freedom fighter ,
insurrectionist ,
insurgent ,
rebel a person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions)