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verb (used without object), in·vig·i·lat·ed, in·vig·i·lat·ing.
  1. to keep watch.
  2. British. to keep watch over students at an examination.
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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 formsin·vig·i·la·tion, nounin·vig·i·la·tor, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


British Dictionary definitions for invigilator


verb (intr)
  1. British to watch examination candidates, esp to prevent cheatingUS word: proctor
  2. archaic to keep watch
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Derived Formsinvigilation, nouninvigilator, 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 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for invigilator


1892, agent noun from invigilate.

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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.

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Online Etymology Dictionary, © 2010 Douglas Harper