rebel

(noun) `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. Synonyms: Rebel, Reb, Johnny Reb, Johnny, greyback.

(noun) a person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions). Synonyms: insurgent, insurrectionist, freedom fighter.

(noun) someone who exhibits great independence in thought and action. Synonyms: maverick.

(verb) take part in a rebellion; renounce a former allegiance. Synonyms: arise, rise, rise up.

(verb) break with established customs. Synonyms: renegade.