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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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
to make somebody aware of something
- be alerted to something They had been alerted to the possibility of further price rises.

alert

noun

/əˈlɜːt/

/əˈlɜːrt/

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[singular, uncountable] a situation in which people are watching for danger and ready to deal with it
- on the alert (for something) Police are warning the public to be on the alert for suspicious packages.
- on alert More than 5 000 troops have been placed on (full) alert.
Extra Examples
- The army was yesterday placed on a state of alert in case of more riots.
- Thousands of police were put on full alert at all main roads leading to the city.
- You should always be on the alert for anyone who looks suspicious.
Topics Dangerc1, War and conflictc1
Oxford Collocations Dictionary
adjective
- heightened
- high
- full
- …
verb + alert
- issue
- put out
- raise
- …
alert + verb
- go out
preposition
- on the alert
- alert for
phrases
- be on full alert
- place somebody on alert
- put somebody on alert
- …
See full entry
[countable] a warning of danger or of a problem
- a bomb/fire alert
Wordfinder
- alert
- assassinate
- attack
- campaign
- execute
- extremist
- hijack
- hostage
- kidnap
- terrorism
see also bomb alert, red alert
Extra Examples
- A nationwide alert went out for three escaped prisoners.
- A security alert was issued after four men escaped from the prison.
- Receive regular email alerts about breaking news.
- The alert was called off when it was found that the bomb was not live.
- They rang the church bells to sound the alert and the villagers then fled.
- A bomb alert forced staff to evacuate the building for several hours.
- A flood alert has been issued in the city after last night's heavy rain.
Topics Dangerc1, War and conflictc1
Oxford Collocations Dictionary
adjective
- heightened
- high
- full
- …
verb + alert
- issue
- put out
- raise
- …
alert + verb
- go out
preposition
- on the alert
- alert for
phrases
- be on full alert
- place somebody on alert
- put somebody on alert
- …
See full entry

Word Originlate 16th cent. (originally in military use): from French alerte, from Italian all' erta ‘to the watchtower’.

alert

adjective

/əˈlɜːt/

/əˈlɜːrt/

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able to think quickly; quick to notice things
- Suddenly he found himself awake and fully alert.
- Two alert scientists spotted the mistake.
- Try to stay alert while driving at night.
- an alert mind
- mentally alert
Extra Examples
- The machine should help to keep the pilot alert.
- There was a noise outside and he was suddenly alert.
Oxford Collocations Dictionary
verbs
- be
- look
- seem
- …
adverb
- extremely
- fairly
- very
- …
preposition
- to
See full entry
alert to something aware of something, especially a problem or danger
- We must be alert to the possibility of danger.
- She was alert to the slightest sound.
Topics Dangerc1
Oxford Collocations Dictionary
verbs
- be
- look
- seem
- …
adverb
- extremely
- fairly
- very
- …
preposition
- to
See full entry

Word Originlate 16th cent. (originally in military use): from French alerte, from Italian all' erta ‘to the watchtower’.

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