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English word

alert

C1
UK /əˈlɜːt/US /əˈlɜːrt/
adjective

able to think quickly; quick to notice things

noun

a situation in which people are watching for danger and ready to deal with it

verb

to warn somebody about a dangerous situation or one that requires immediate action

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Sentence 90 · Pro
2019 Stanford Commencement address by Tim Cook
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I was eight years old and a thousand miles away when Stonewall happened; there were no news alerts, no way for photos to go viral, no.

2019 Stanford Commencement address by Tim Cook

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