Longman Dictionary of Contemporary English homepage

Date: 1500-1600
Language: Latin
Origin: invigilare 'to watch, be awake in', from vigil; VIGIL

invigilate

verb
     
Related topics: Education
in‧vi‧gi‧late [intransitive and transitive] British English
SE to watch people who are taking an examination and make sure that they do not cheat [= proctor American English]
invigilator noun [countable]

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