- alert
- a|lert1 [ ə`lɜrt ] adjective *1. ) able to think in a clear and intelligent way:He's remarkably alert for his age.Regular exercise could help you to feel better, look better, and be more alert.2. ) alert to paying attention to what is happening and ready to react quickly if necessary:Parents must be alert to the symptoms of the disease.╾ a|lert|ly adverb╾ a|lert|ness noun uncountalerta|lert 2 [ ə`lɜrt ] verb transitive *1. ) to tell someone in authority about a danger or problem so that they can take action to deal with it: INFORM:Our neighbors heard the car being broken into and alerted the police.2. ) FORMAL to tell someone about something that may affect them: WARN:alert someone to something: Something in his voice alerted Paige to the real danger.alert someone to do something: We will be alerting people not to swim in the water.alerta|lert 3 [ ə`lɜrt ] noun counta warning that something dangerous has happened or is going to happen:Flood alerts were issued for dozens of rivers.=> RED ALERTon alertready to take action to deal with a dangerous situation:The airplane crashed about 5 miles southeast of Carrollton, and local hospitals were placed on alert.on full alert: The troops at the local base were put on full alert.on the alertpaying attention to what is happening and ready to react quickly if necessary
Usage of the words and phrases in modern English. 2013.