alert
/əˈlɜrt/noun★Intermediate
formal
a signal that warns of danger or a problem
The system issued an alert when the temperature rose above the limit.
It warned that the temperature was too high.
💡
Common in safety, technology, and news contexts.
informal
quick to notice and respond to potential problems
She stayed alert during the night shift.
She remained watchful and ready.
💡
Describes a person’s state of readiness.
Collocations
raise an alertto generate a warning signalissue an alertto formally announce a warning
English Dictionary