n.[C][U]

1. 吵闹；喧哗
   The tumult in the streets awakened everyone in the house.

   街上的喧哗吵醒了屋子里的每一个人。

2. 骚乱，骚动；混乱
3. （思想、情绪等的）波动，激动
   Her mind was in a tumult.

   她心烦意乱。

n.

1. a loud, confused noise, as caused by a large mass of people.
2. confusion or disorder.