hypervigilant
Americanadjective
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especially wary or alert.
All high school and college coaches need to be hypervigilant about suspected brain injuries.
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overly sensitive and reactive to stimuli.
PTSD sufferers may experience nightmares and heightened anxiety, and they may be hypervigilant and develop an increased startle response.
Other Word Forms
Etymology
Origin of hypervigilant
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"Because they're constantly frightened of the event happening again, they stay in red alert mode so they're hypervigilant, always looking out for danger, always looking over their shoulder, even when danger isn't there."
From BBC ● May 13, 2026
“Cherry is effervescent. It’s always there waiting to come out. She’s so reactive. And I’m hypervigilant for the warning signs before I react. This was like a rage room.”
From Los Angeles Times ● Sep. 10, 2025
Then I started going down the checklist: I was hypervigilant; I couldn’t stop reliving the events; I had debilitating anxiety; I had trouble breathing and talking; I experienced intense guilt; I couldn’t sleep or focus.
From Slate ● Feb. 1, 2024
A large Swedish study has uncovered a paradox about people diagnosed with an excessive fear of serious illness: They tend to die earlier than people who aren’t hypervigilant about health concerns.
From Seattle Times ● Dec. 13, 2023
"Those who are hypervigilant due to anxiety or trauma are very prone over apologizing."
From Salon ● Nov. 29, 2023
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.