alert
adjective
fully aware and attentive; wide-awake; keen.
alerted
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past participleof alert.past participle
A verb form used in perfect and passive verb constructions and that can also function as a modifier.
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past tense formof alert.past tense
Used to describe completed actions or previous habitual actions.
alertadjectivefully aware and attentive; wide-awake; keen.
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.
He said it had alerted "handfuls" of bodies, and that it was aware of a "couple of impacts".
From BBC ● Nov. 3, 2026
A passerby alerted State Parks to the nest on Sunday, a spokesperson said.
From Los Angeles Times ● Nov. 3, 2026
The disruptions were brief, however, in part because a message board funded by the federal Cybersecurity and Infrastructure Security Agency, or CISA, alerted election officials that the FBI had deemed the threats not credible.
From Salon ● Nov. 3, 2026
The group alerted the exchange’s top executives, who convened a crisis team of some 100 employees.
From The Wall Street Journal ● Oct. 30, 2026
He dashed upstairs, alerted the “Home Guard,” and the four of them went downstairs.
From "The Diary of a Young Girl" by Anne Frank
