invigilator

nouns

someone who watches examination candidates to prevent cheating
invigilator
is derived from
invigilate
domain region
a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom
Britain, Great Britain, U.K., UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland
is a type of (narrower)
someone who supervises (an examination)
monitor, proctor