Vocabulary: invigilator

Today’s word is invigilator, meaning “one who watches over students at an examination”. I first encountered this word on the Real Property exam notice, initially putting it down to Professor Peter Butt’s sense of humour. The word has a certain Death Eater ring to it doesn’t it?

Alas, it’s a real word - although the OED tells me that invigilate used to mean “watch carefully” in a more general sense.