coadjutor
/koʊˈædʒətər/
noun
- A person who helps or assists another, especially in a role of authority; an assistant or colleague.
- The bishop appointed a coadjutor to help manage the growing diocese.
- In the old kingdom, the king's coadjutor handled many daily tasks.
- She served as coadjutor to the principal, organizing school events and schedules.
Antonyms