noun
administrator
ad-MIN-ih-stray-ter/ədˈmɪnɪstreɪtər/
A person authorized to manage an organization, system, or estate.
The system administrator manages the connected computers from a central console.

Etymology
The pieces connect managing with serving or attending to others. The combined Latin verb also meant to direct or manage, so the agent ending identifies someone entrusted with that work.
In context
they had just lost their their administrator unexpectedly and the administrator didn't pass on the fact that there was a meeting that night
More examples
- Only an administrator can change these system permissions.
- The court appointed an administrator to handle the estate.
- Hospital administrators meet to discuss the new scheduling system.
Forms
administrator · administrators
administer verb — To manage or carry out official operations.
Similar words
- manager
- Often directs daily work without special legal or technical authority.
- supervisor
- Emphasizes overseeing people's work rather than managing an entire system.