rebellion

Open, armed, and organized resistance to a constituted government.

An instance of this.

Defiance toward an authority or established convention.

War waged against a government by some part of its subjects; armed opposition to a government by a party of citizens, for the purpose of changing its composition, constitution, or laws; insurrectionary or revolutionary war.

The act of rebelling or taking part in a rebellious movement; open or armed defiance to one's government; the action of a rebel.