insurrection

1. N-VAR An insurrection is violent action that is taken by a large group of people against the rulers of their country, usually in order to remove them from office. 叛亂[正式]

They were plotting to stage an armed insurrection if negotiations with the government should fail. 他們正在策劃如果與政府的談判失敗就發動武裝叛亂。