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be alert

VERB

look out

Synonyms

WEAK

be careful be on guard beware check out have a care heads up hearken keep an eye out keep tabs listen mind notice pay attention peg pick up on scope shotgun size up spot spy watch out

Antonyms

WEAK

disregard ignore neglect

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.

Security Minister Dan Jarvis said people should be "alert and vigilant" but not "alarmed".

From BBC • Apr. 30, 2026

Smout urged everyone to be alert to the signs and symptoms of meningococcal meningitis and septicaemia, which can include a fever, headache, rapid breathing, drowsiness, shivering, vomiting and cold hands and feet.

From BBC • Apr. 17, 2026

Nvidia earnings ought to quell any major AI fears for now, but investors need to be alert for signs of who will be the winners and the losers.

From Barron's • Feb. 26, 2026

Investors will be alert to comments from top executives about future AI activity which could impact stocks and markets.

From Barron's • Feb. 16, 2026

"No, I'm trying to go without it. I like to be alert for small changes."

From "The Belles" by Dhonielle Clayton

be alert

Example Sentences

Related Words