alert (B1)

verb

Pronunciation: /əˈlɜːrt/

Definition

To warn someone of a danger, problem, or other important situation.

Examples

• The sudden drop in temperature alerted scientists to a potential climate shift.

• A strange smell from the kitchen alerted her that something was burning.

• The security system is designed to alert residents if an intruder is detected.

How to Use alert

alert someone to something (prepositional phrase)

To make someone aware of a situation or fact. — "The doctor alerted the patient to the potential side effects of the medication."

be on alert (idiom)

To be ready for something, especially danger. — "The coast guard is always on alert for illegal fishing vessels."

alert system (collocation)

A system designed to give warnings. — "The new fire alert system is very sensitive."

Synonyms of alert

Words with a similar meaning to alert:

• warn
• notify
• apprise
• forewarn

Antonyms of alert

Words with the opposite meaning to alert:

• unaware
• oblivious

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