alert

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.

"The improvement we saw is clinically meaningful. These workers were able to stay awake and alert throughout a full eight-hour shift, which has real implications for performance, safety, and quality of life," Czeisler said.

From Science Daily • Apr. 1, 2026

He was alert enough the night before his death to say goodbye to his daughter.

From Los Angeles Times • Mar. 30, 2026

The Met had earlier promised an increased police presence in response to the protest, adding officers would be "alert to any behaviour that crosses the line from protest into criminality".

From BBC • Mar. 28, 2026

Since the outbreak of the war of the Middle East, European countries have been on high alert for potential attacks on Iranian dissidents, Jewish places of worship and US-Israeli assets.

From Barron's • Mar. 28, 2026

Just stayed on the alert, watching for emergencies.

From "Carry On, Mr. Bowditch" by Jean Lee Latham