officer
Definitions
A person holding a position of authority or trust in an organization, such as a government, corporation, or military branch.
A member of a police force.
A person who holds a commission in the armed forces.
Examples
The police officer directed traffic away from the accident scene.
The commanding officer gave the order to begin the mission at dawn.
Synonyms
official functionary administrator executive constable agent representative
Antonyms
civilian subordinate layperson private citizen subject noncombatant