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.

She kept jurors, lawyers and media on a strict schedule, with only two twenty-minute breaks per day and no lunch time to ensure maximum alertness.

From BBC • May 15, 2026

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

Research suggests certain colors can enhance a sense of well-being or even increase alertness.

From The Wall Street Journal • Dec. 26, 2025

“Get dressed,” he ordered her, congratulating himself on his alertness.

From "Catch-22" by Joseph Heller