invigilate

 : 
Verb (intransitive)
 : 
in=vig=i=late

WORDNET DICTIONARY

Verb invigilate has 1 sense

CIDE DICTIONARY

invigilaten. [L. invigilare to stay awake, to be vigilant.].
  •  To keep watch.  [PJC]
  •  To keep watch over examination candidates to prevent cheating.  [WordNet 1.5]

OXFORD DICTIONARY

invigilate, v.intr. Brit. supervise candidates at an examination.

Derivative
invigilation n. invigilator n.
Etymology
orig. = keep watch, f. L invigilare invigilat- (as IN-(2), vigilare watch f. vigil watchful)

For further exploring for "invigilate" in Webster Dictionary Online


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