ETYM Old Eng. vigile, Latin vigilia, from vigil awake, watchful, probably akin to Eng. wake: cf. French vigile. Related to Wake, Reveille, Surveillance, Vedette, Vegetable, Vigor.
1. A devotional watch (especially on the eve of a religious festival); SYN. watch.
2. A period of sleeplessness.

ETYM Latin vigilantia: cf. French vigilance.
1. The quality or state of being vigilant; forbearance of sleep; wakefulness.
2. Watchfulness in respect of danger; care; caution; circumspection.
3. Guard; watch.