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.

Here, the very irregularity of the interior environment, including the concrete surfaces — richer and more textured than I expected — heightened my alertness.

From Los Angeles Times • Apr. 22, 2026

When this brain region becomes too active, it can actually trigger sleepiness instead, creating a delicate balance between sleep and alertness.

From Science Daily • Mar. 30, 2026

Each morning, participants completed cognitive tests and questionnaires designed to assess sleep quality, alertness, and other health-related effects.

From Science Daily • Feb. 4, 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

If not for the alertness in his ocean-blue eyes, he would resemble, more than anything, a scarecrow that had come down from its stake.

From "The Mysterious Benedict Society" by Trenton Lee Stewart