invigilator
noun
- person of authority, who pays attention to enforce rules
Wiktionary
Pronunciation: /ɪnˈvɪd͡ʒɪleɪtəɹ/
noun
Etymology: From invigilate + -or, from Latin invigilatus, past participle of invigilo.
- A person who supervises students during an examination; a proctor
- A person who supervises a gallery at a museum.