invigilator

from WordNet (r) 3.0 (2006)
invigilator
    n 1: someone who watches examination candidates to prevent
         cheating
    
from The Collaborative International Dictionary of English v.0.48
invigilator \invigilator\ n.
   someone who watches examination candidates to prevent
   cheating. [British]
   [WordNet 1.5]
    

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