Rebel (noun)

1. A person who rises in opposition or armed resistance against an established government or ruler.
2. A person who resists or defies an authority, control, or tradition.
3. A person who fights against the established order.

Origin:

From middle english rebellen ("to rebel"), from old french rebeler ("to rebel"), from re- ("again") + bellen ("to bellow, to make war"), from latin rebellare ("to rebel"), from re- ("again") + bellare ("to make war").

Examples:

1. The rebels were fighting against the government.
2. The rebel group staged a coup.
3. The rebel leader was captured.
4. The rebel army was defeated.
5. The rebel movement was suppressed.