1890, agent noun from invigilate.

A person appointed by the Registrar to be a supervisor of examinations in the location in which the examination is to be held.

(n) someone who watches examination candidates to prevent cheating

An individual—authorized by an AU representative in Examination Services Unit—who supervises an undergraduate course examination for an AU student.

Invigilator means a person who supervises students during an examination.

This is an approved examination supervisor who is responsible for ensuring that an exam is taken in accordance with university requirements and rules, and for returning completed exams to the universi [..]

 A synonym for proctor. A Serco employee authorized to supervise/administer and to mark security guard and private investigator tests on behalf of the Ministry of Community Safety and Correctional Ser [..]

a supervisor in formal examinations.

A person who ensures examinations run smoothly, by complying with the regulations set on them. This includes start and finish times, the securing of papers, recording attendance and seating, and watch [..]

A staff member or approved nominee who is responsible for supervising examinations.

(UK,Canada) A person who supervises students during an examination; a proctor (chiefly,UK|or|archaic) A person who supervises a gallery at a museum.