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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.

But policymakers will be alert to signs that the energy shock is spilling over.

From The Wall Street Journal • Apr. 24, 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

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

Though current risks from stablecoins were "limited", the economists said, their "rapid growth" meant regulators had to be alert to potential dangers.

From Barron's • Nov. 24, 2025

Take no risks and be alert to danger.

From "And Then There Were None" by Agatha Christie

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