ˈvijələn(t)s noun
( -s )
Etymology: Middle French, from Latin vigilantia wakefulness, vigilance, from vigilant-, vigilans + -ia -y
1. : the quality or state of being vigilant : watchfulness in respect of danger or hazard
constant vigilance against the spread of disease
2. : readiness or alertness especially to respond to stimuli
the vigilance of a person's nerves