1in confusion or disorder
2in a confused state of mind
3disorder
4upheaval
5riot
6illicit sexual relations
7to throw into disorder
8to mix up
9indiscriminate
10random
11arbitrary
Examples
nà那chǎng场yì wài意外shǐ使jiāo tōng交通dà大luàn乱。
那场意外使交通大乱。
The accident caused traffic confusion.
我弟弟的房间总是很乱。
My brother's room is always a mess.
随便乱弄电是危险的。
It's dangerous to fool around with electricity.