Free-for-all (noun)

1. A chaotic and unrestrained situation or competition.
2. An unorganized competition in which everyone is free to participate.
3. A situation characterized by uncontrolled and indiscriminate activity.

Origin:

The term 'free-for-all' originated in the mid-19th century and is believed to be derived from a colloquial expression meaning a fight in which anyone can participate. the term was later used to describe other situations involving unrestricted competition or unrestrained activity.

Examples:

1. The free-for-all at the department store during the sale was chaotic.
2. The free-for-all at the bar led to a lot of broken glass.
3. The free-for-all debate was a mess, with everyone talking at the same time.
4. The free-for-all scramble for the ball led to a touchdown.
5. The free-for-all race to the finish line was exciting to watch.