alertness
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.
In a small study on people with insomnia, when they were given a false negative sleep score, those individuals reported sleepiness and fatigue, as well as lower levels of alertness and clear thinking.
From Slate ● Aug. 11, 2026
“She is eating on her own, her energy and alertness have noticeably improved, and she has become much more feisty during feedings.”
From Los Angeles Times ● Jul. 28, 2026
My brain remained active for a minute or so, with higher-frequency alpha waves associated with alertness staying strong.
From The Wall Street Journal ● Jun. 27, 2026
The research provides new insight into how sleep loss affects the brain and suggests that caffeine's benefits may extend beyond simply increasing alertness.
From Science Daily ● May 30, 2026
I drag myself into a state of relative alertness, eat a can of potato and bean stew, and sit against the wall facing the door.
From "Mockingjay" by Suzanne Collins
