Learn how to say Invigilator correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word invigilator:
(education) a person who watches examination candidates, esp to prevent cheating ⇒ an exam invigilator ⇒ The invigilator comes around now to collect all the papers.
a person or body that supervises a process or activity in order to ensure correct behaviour ⇒ He has worked as an exhibition invigilator. ⇒ one-time world record invigilator Norris McWhirter ⇒ His party has written to the Electoral Commission to ask for special invigilators.