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.

Once growth hormone enters the system, it activates the locus coeruleus, a brainstem region that controls alertness, attention, and cognitive function.

From Science Daily • Mar. 30, 2026

They do so by irritating the linings of the nose and lungs, triggering a reflex that increases breathing rate and blood flow, fostering alertness.

From Los Angeles Times • Jan. 12, 2026

"This is done only as a precautionary measure, but it is appropriate that we are at a crescent sense of alertness just at the moment for the time being," he said.

From BBC • Dec. 15, 2025

Mr. Jones heightens the sense of unease with a style that favors sparsity and acoustic alertness.

From The Wall Street Journal • Dec. 4, 2025

She was all alertness; her ears swiveled, searching for sounds, and her nose twitched as it picked up fresh scents on every current of air.

From "The Unseen Guest" by Maryrose Wood