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alertness

NOUN
watchfulness
Synonyms


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

Some did their exercises at times to match their body clock chronotype - the natural predisposition to morning or evening alertness - while others did the opposite.

From BBC • Apr. 14, 2026

Researchers considered it a promising option because it can promote alertness for extended periods without significantly disrupting later sleep.

From Science Daily • Apr. 1, 2026

These findings suggest that a single control system may coordinate both attention and basic bodily functions such as fluid flow, heart rate, and alertness.

From Science Daily • Jan. 20, 2026

Their wide wakes rippled through the lily pads and rolled the canoe abruptly from side to side, prodding Joe back to alertness.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown




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