Chaos (noun)

1. Complete disorder and confusion.
2. A state of utter confusion or disorder.

Origin:

Late 16th century: from greek khaos "vast chasm, void", also "the primeval void, the universe before creation".

Examples:

1. The city was in chaos after the earthquake.
2. The financial market was in chaos after the stock market crash.
3. The situation at the airport was chaos with people running in all directions.
4. The party descended into chaos when the police arrived.
5. The protesters caused chaos in the city center as they marched.