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Definition of alert verb from the Oxford Advanced Learner's Dictionary

alert

verb
 
/əˈlɜːt/
 
/əˈlɜːrt/
[often passive]
Verb Forms
present simple I / you / we / they alert
 
/əˈlɜːt/
 
/əˈlɜːrt/
he / she / it alerts
 
/əˈlɜːts/
 
/əˈlɜːrts/
past simple alerted
 
/əˈlɜːtɪd/
 
/əˈlɜːrtɪd/
past participle alerted
 
/əˈlɜːtɪd/
 
/əˈlɜːrtɪd/
-ing form alerting
 
/əˈlɜːtɪŋ/
 
/əˈlɜːrtɪŋ/
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  1. to warn somebody about a dangerous situation or one that requires immediate action
    • alert somebody Neighbours quickly alerted the emergency services.
    • (be) alerted by something Alerted by a noise downstairs, he sat up and turned on the light.
    • be alerted that… The coastguard were alerted that a yacht had run into difficulties.
    Topics Dangerc1, War and conflictc1
  2. to make somebody aware of something
    • be alerted to something They had been alerted to the possibility of further price rises.
See alert in the Oxford Advanced American DictionarySee alert in the Oxford Learner's Dictionary of Academic English
dizzy
adjective
 
 
From the Topic
Health problems
C1
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