From WordNet (r) 3.0 (2006):
Rebel
n 1: `Johnny' was applied as a nickname for Confederate soldiers
by the Federal soldiers in the American Civil War;
`greyback' derived from their grey Confederate uniforms
[syn: Rebel, Reb, Johnny Reb, Johnny, greyback]
2: a person who takes part in an armed rebellion against the
constituted authority (especially in the hope of improving
conditions) [syn: insurgent, insurrectionist, freedom
fighter, rebel]
3: someone who exhibits great independence in thought and action
[syn: maverick, rebel]
v 1: take part in a rebellion; renounce a former allegiance
[syn: rebel, arise, rise, rise up]
2: break with established customs [syn: rebel, renegade]