deputy
Definitions
A person appointed to act as a substitute for another in an official capacity.
A second-in-command or assistant to a person in a position of authority.
A member of a legislative body in certain countries.
Examples
The sheriff appointed a new deputy to help patrol the rural county.
The deputy director will be in charge of the department while the manager is on vacation.
She served as a deputy for several years before being elected as the head of the organization.
Synonyms
substitute delegate proxy assistant second lieutenant representative