had invigilated

• past perfect

  past perfect

  Used to express a completed action that took place before another specific past action occurred.

  of invigilate.
  invigilate

  verb (used without object)

  to keep watch.

More Suggestions

• invigilator
• annihilate
• dissimilate
• invigorate
• inviolate
• reinvigorate
• self-initiated