Definition of hypervigilant
: extremely or excessively vigilant : highly or abnormally alert to potential danger or threat
- After an accident or an assault, most people tend to feel unsafe, to have a reduced startle threshold, and to be hypervigilant.
- —Irvin D. Yalom
- Through its hypervigilant security measures, this state-run airline keeps its passengers safe from everyone except its own surly flight attendants.
- —Craig Offman
- We all have to be hyper-vigilant about our own affairs and those of our kids and elderly loved ones.
- —Teresa Dixon Murray
