alert
//əˈlɜːrt//
Adjective
alertCanonical form
more alertComparative
most alertSuperlative
1
Quick to notice and respond to things; watchful and attentive.
The guard remained alert throughout the night.
2
Mentally quick and perceptive; sharp.
She has an alert mind and quickly grasps new concepts.
Antonym
Noun
alertSingular
alertsPlural
1
A warning or notification of danger or a problem.
The government issued a flood alert for the coastal areas.
2
A state of readiness or vigilance in response to danger.
The military was put on high alert after the threat was detected.
Synonym
Verb
alertInfinitive
alertPresent tense
alertedPast tense
alertedPast participle
alertingPresent participle
alertsThird-person singular
1
To warn someone of a danger, threat, or problem.
The security system alerted us to the intruder.
2
To make someone aware of something; to notify.
The security guard alerted the manager about the suspicious activity.