invigilate

Universal Words verb (BrE) (AmE proctor) to watch people while they are taking an exam to make sure that they have everything they need, that they keep to the rules, etc: [VN] to invigilate an exam [also V] invigilation noun [U] invigilator (BrE) (AmE proctor) noun: If you have a problem, ask the invigilator.