in ‧ vi ‧ gi ‧ late /ɪnˈvɪdʒəleɪt, ɪnˈvɪdʒɪleɪt/ BrE AmE verb [intransitive and transitive] British English
[ Date: 1500-1600 ; Language: Latin ; Origin: invigilare 'to watch, be awake in' , from vigil ; ⇨ ↑ vigil ]
to watch people who are taking an examination and make sure that they do not cheat SYN proctor American English
—invigilator noun [countable]