1 an occasion when some of the people in a country try to change the government, using violence 造反；叛乱

2 the action of fighting against authority or refusing to accept rules （对权威或规定的）反抗，不服从，叛逆: Voting against the leader of the party was an act of open rebellion. 对该党领袖投反对票是公开反叛之举。