be on 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.
German forecasters said parts of the country needed to be on alert for thunderstorms, hail and heavy rain over the weekend.
From Barron's ● Jun. 19, 2026
The State Department recently warned fans attending games in Mexico to be on alert for pickpockets and scams, and to avoid hailing roadside taxis.
From The Wall Street Journal ● Jun. 11, 2026
Gardeners and growers across the northern half of the UK will then need to be on alert on Saturday night as a frost is possible.
From BBC ● May 9, 2026
Anyone playing in the already-volatile small-cap arena should be on alert to avoid getting burned.
From Barron's ● Nov. 18, 2025
Lately, I felt like I always had to be on alert for the next raccoon invasion.
From "Crenshaw" by Katherine Applegate
