: able to think clearly and to notice things
: something (such as a message or loud sound) that tells people there is some danger or problem : an alarm or signal of danger
: the state of being ready for something you have been warned about (such as an attack)
: to give (someone) important information about a possible problem, danger, etc. : to warn (someone)
: to make (someone) aware of something
What made you want to look up alert? Please tell us where you read or heard it (including the quote, if possible).
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