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.

And more serious concerns such as a stroke need to be ruled out when dizziness or vertigo is accompanied by severe imbalance, double vision, slurred speech, weakness, numbness, trouble walking or decreased alertness.

From The Wall Street Journal • Apr. 15, 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

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

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