**Prerogative** is a noun that means an exclusive right or privilege that is granted to a particular individual or group. Here are some examples of how it can be used in English:
1. As the host of the event, it was my prerogative to decide who would speak at the opening ceremony.
2. The president's prerogative includes the ability to veto legislation passed by Congress.
3. It is not within my prerogative to give you permission to leave early from work without discussing it with your supervisor first.
4. The judge's prerogative is to determine whether or not a defendant is guilty or innocent.
5. As a member of the royal family, it is one of their prerogatives to attend state functions and official events.
6. It is not my prerogative to make decisions regarding the budget without consulting with the finance committee.
7. The professor's prerogative was to decide which topics to cover in the course syllabus.
8. As a parent, it is your prerogative to choose how to discipline your children.
9. The CEO's prerogative included the ability to hire and fire employees.
10. It is not within my prerogative to grant you access to the restricted area without a security clearance.