Source : Webster's Revised Unabridged Dictionary (1913)

Insurgent \In*sur"gent\, a. [L. insurgens, p. pr. of insurgere
   to rise up; pref. in- in + surgere to rise. See {Surge}.]
   Rising in opposition to civil or political authority, or
   against an established government; insubordinate; rebellious.
   ``The insurgent provinces.'' --Motley.

Insurgent \In*sur"gent\, n. [Cf. F. insurgent.]
   A person who rises in revolt against civil authority or an
   established government; one who openly and actively resists
   the execution of laws; a rebel.

   Syn: See {Rebel}.

Source : WordNet®

insurgent
     adj : in opposition to a civil authority or government [syn: {seditious},
            {subversive}]
     n 1: a person who takes part in an armed rebellion against the
          constituted authority (especially in the hope of
          improving conditions) [syn: {insurrectionist}, {freedom
          fighter}, {rebel}]
     2: a member of an irregular armed force that fights a stronger
        force by sabotage and harassment [syn: {guerrilla}, {guerilla},
         {irregular}]