hypervigilant

adjective
hy·​per·​vig·​i·​lant | \ ˌhī-pər-ˈvi-jə-lənt How to pronounce hypervigilant (audio) \
variants: or hyper-vigilant

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

First Known Use of hypervigilant

1905, in the meaning defined above

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The first known use of hypervigilant was in 1905

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