Source : Webster's Revised Unabridged Dictionary (1913)

Rebel \Re*bel"\, v. i. [imp. & p. p. {Rebelled}; p. pr. & vb. n.
   {Rebelling}.] [F. rebeller, fr. L. rebellare to make war
   again; pref. re- again + bellare to make war, fr. bellum war.
   See {Bellicose}, and cf. {Revel} to carouse.]
   1. To renounce, and resist by force, the authority of the
      ruler or government to which one owes obedience. See
      {Rebellion}.

            The murmur and the churl's rebelling. --Chaucer.

            Ye have builded you an altar, that ye might rebel
            this day against the Lord.            --Josh. xxii.
                                                  16.

   2. To be disobedient to authority; to assume a hostile or
      insubordinate attitude; to revolt.

            Hoe could my hand rebel against my heart? How could
            you heart rebel against your reason?  --Dryden.

Source : WordNet®

rebel
     adj 1: used by northerners of Confederate soldiers; "the rebel
            yell"
     2: participating in organized resistance to a constituted
        government; "the rebelling confederacy" [syn: {rebel(a)},
        {rebelling(a)}, {rebellious}]
     [also: {rebelling}, {rebelled}]

rebelling
     adj : participating in organized resistance to a constituted
           government; "the rebelling confederacy" [syn: {rebel(a)},
            {rebelling(a)}, {rebellious}]

rebelling
     See {rebel}