- vigil - a period of sleeplessness
--1 is a kind of wakefulness
- vigil, watch - a devotional watch (especially on the eve of a religious festival)
--2 is a kind of rite, religious rite
--2 has particulars: wake, viewing; agrypnia- watch, vigil - a purposeful surveillance to guard or observe
--3 is a kind of surveillance
--3 has particulars: listening watch, continuous receiver watch; spying - vigil, watch - a devotional watch (especially on the eve of a religious festival)