Definition of Alert in English :

Define Alert in English

Alert meaning in English

Meaning of Alert in English

Pronunciation of Alert in English

Alert pronunciation in English

Pronounce Alert in English


see synonyms of alert


1. alert, qui vive

condition of heightened watchfulness or preparation for action

Example Sentences:
'bombers were put on alert during the crisis'

2. alert, alerting

a warning serves to make you more alert to danger

3. alarm, alarum, alert, warning signal

an automatic signal (usually a sound) warning of danger


4. alarm, alert

warn or arouse to a sense of danger or call to a state of preparedness

Example Sentences:
'The empty house alarmed him'
'We alerted the new neighbors to the high rate of burglaries'


5. alert, watchful

engaged in or accustomed to close observation

Example Sentences:
'caught by a couple of alert cops'
'alert enough to spot the opportunity when it came'
'constantly alert and vigilant, like a sentinel on duty'

6. alert, brisk, lively, merry, rattling, snappy, spanking, zippy

quick and energetic

Example Sentences:
'a brisk walk in the park'
'a lively gait'
'a merry chase'
'traveling at a rattling rate'
'a snappy pace'
'a spanking breeze'

7. alert, alive, awake

mentally perceptive and responsive

Example Sentences:
'an alert mind'
'alert to the problems'
'alive to what is going on'
'awake to the dangers of her situation'
'was now awake to the reality of his predicament'

WordNet Lexical Database for English. Princeton University. 2010.


see synonyms of alert
adjective (usually postpositive)
vigilantly attentive
alert to the problems
brisk, nimble, or lively
an alarm or warning, esp a siren warning of an air raid
the period during which such a warning remains in effect
5.  on the alert
verb (transitive)
to warn or signal (troops, police, etc) to prepare for action
to warn of danger, an attack, etc

Collins English Dictionary. Copyright © HarperCollins Publishers


see synonyms of alert
watchful and ready, as in facing danger
quick in thought or action; active; nimble
a warning signal as of an expected air raid; alarm
the period during which such a warning is in effect
verb transitive
to warn to be ready or watchful
the troops were alerted
to inform or make aware of
we alerted them to their duties

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.


see synonyms of alert
1. Vigilantly attentive; watchful: alert to danger; an alert bank guard. See Synonyms at careful.
2. Mentally responsive and perceptive; quick.
3. Brisk or lively in action: the bird's alert hopping from branch to branch.
1. A signal that warns of attack or danger: Sirens sounded the alert for an air raid.
2. A condition or period of heightened watchfulness or preparation for action: Nuclear-armed bombers were put on alert during the crisis.
tr.v. a·lert·ed, a·lert·ing, a·lerts
To notify of approaching danger or action; warn: a flashing red light that alerted motorists to trouble ahead.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.