1917, from French (1907); see hyper- "over, exceedingly, to excess" + vigilance. Related: Hypervigilant.
1560s, from French vigilance (16c.), from Latin vigilantia "wakefulness, watchfulness, attention," from vigil "watchful, awake" (from PIE root *weg- "to be strong, be lively"). Related: Vigilancy (1530s).