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。