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[in-vij-uh-leyt] /ɪnˈvɪdʒ əˌleɪt/
verb (used without object), invigilated, invigilating.
to keep watch.
British. to keep watch over students at an examination.
Origin of invigilate
1545-55; < Latin invigilātus (past participle of invigilāre to keep watch, stay up late), equivalent to in- in-2 + vigilā- (stem of vigilāre to watch; see vigil) + -tus past participle suffix
Related forms
invigilation, noun
invigilator, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for invigilate


verb (intransitive)
(Brit) to watch examination candidates, esp to prevent cheating US word proctor
(archaic) to keep watch
Derived Forms
invigilation, noun
invigilator, noun
Word Origin
C16: from Latin invigilāre to watch over, from in-² + vigilāre to keep watch; see vigil
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for invigilate

1550s, from Latin invigilatus, past participle of invigilare "watch over, be watchful, be devoted," from in- "in" (see in- (2)) + vigilare (see vigil). Especially in reference to student exams. Related: Invigilated; invigilating.

Online Etymology Dictionary, © 2010 Douglas Harper
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