noun
monopoly
muh-NAH-puh-lee/məˈnɑːpəli/
Exclusive control of a market, resource, or activity by one entity.
The single seller gains a monopoly after the competing stalls close.

Etymology
“Single” and “sell” point to the exclusive right to sell something. That commercial idea broadened into possession or control that excludes others, including control beyond trade.
In context
you can have any kind of market structure monopoly a single monopoly seller might be a problem
More examples
- The company held a local monopoly.
- Several monopolies controlled essential supplies.
- No one has a monopoly on good ideas.
Forms
monopoly · monopolies
Similar words
- dominance
- Dominance does not require exclusive control.
- cartel
- A cartel involves multiple cooperating entities rather than one exclusive controller.