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1. Dictionary

   alert

   /əˈləːt/

   adjective

   • 1. quick to notice any unusual and potentially dangerous or difficult circumstances; vigilant: "an alert police officer discovered a lorry full of explosive" Similar vigilanthypervigilantwide awakeawarewatchfulattentiveobservantcircumspectwarycharyheedfulcannyon the lookouton one's guardon one's toesall earskeeping one's eyes open/peeledkeeping a weather eye openon the qui viveOpposite inattentive
   • ▪ able to think clearly; intellectually active: "she remained active and alert until well into her eighties" Similar quick-wittedsharpbrightquickkeenperceptivewide awakeresponsiveagileacuteastuteinformal:on the ballon one's toesquick off the markquick on the uptakeall therewith itbright-eyed and bushy-tailedOpposite slow

   noun

   • 1. the state of being watchful for possible danger: "security forces are on the alert for an upsurge in violence" Similar vigilancewatchfulnesscarefulnessattentivenessguardednesscarecautioncautiousnesswarinesscharinessalertnesshypervigilancecircumspectionprudenceheedfulnessheedmindfulnessOpposite carelessness
   • ▪ an announcement or signal warning of danger: "a bomb alert" Similar warningcautionnotificationnoticeexhortationinjunctionsirenalarmsignaldanger signaldistress signal
   • ▪ a period of vigilance following a warning of danger: "traffic was halted during the alert"
   • ▪ a signal on an electronic device that prompts the user to do something or attracts their attention: "a vibrating alert is a discreet alternative to ringtones"

   verb

   • 1. warn (someone) of a danger or problem: "he alerted people to the dangers of smoking"

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

   Derivatives

   • 1. alertly adverb

   Scrabble Points: 5

   • A

     1

   • L

     1

   • E

     1

   • R

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   • T

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   More definitions, origin and scrabble points

2. dictionary.cambridge.org › dictionary › englishALERT | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   ALERT definition: 1. quick to see, understand, and act in a particular situation: 2. a warning to people to be…. Learn more.

3. www.merriam-webster.com › dictionary › alertAlert Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › alert

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   The meaning of ALERT is watchful and prompt to meet danger or emergency. How to use alert in a sentence. Synonym Discussion of Alert.

4. www.dictionary.com › browse › alertALERT Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › alert

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   An alert is a warning or alarm, especially an alarm about dangerous weather or a military attack, as in The National Weather Service has alerts for tornadoes, hurricanes, Nor’easters, and other severe weather occurrences.

5. www.collinsdictionary.com › dictionary › englishALERT definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   1. watchful and ready, as in facing danger. 2. quick in thought or action; active; nimble. noun. 3. a warning signal as of an expected air raid; alarm. 4. the period during which such a warning is in effect.

6. www.oxfordlearnersdictionaries.com › definition › englishalert verb - Definition, pictures, pronunciation and usage notes...

   www.oxfordlearnersdictionaries.com › definition › english

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   Definition of alert verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

7. www.ldoceonline.com › dictionary › alertalert | meaning of alert in Longman Dictionary of Contemporary...

   www.ldoceonline.com › dictionary › alert

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   alert meaning, definition, what is alert: giving all your attention to what is hap...: Learn more.

8. www.thefreedictionary.com › alertAlert - definition of alert by The Free Dictionary

   www.thefreedictionary.com › alert

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   n. 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.

9. www.oxfordlearnersdictionaries.com › definition › englishalert noun - Definition, pictures, pronunciation and usage notes...

   www.oxfordlearnersdictionaries.com › definition › english

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   Definition of alert noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

10. dictionary.cambridge.org › us › dictionaryALERT | definition in the Cambridge Learner’s Dictionary

    dictionary.cambridge.org › us › dictionary

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    a warning about a possibly dangerous situation: a bomb alert. be on full/red alert. to be expecting problems and ready to deal with them: Police in the region were on full alert against further attacks.

11. www.vocabulary.com › dictionary › alertAlert - Definition, Meaning & Synonyms | Vocabulary.com

    www.vocabulary.com › dictionary › alert

    When you issue an alert you give warning, alerting people to, or notifying them of, a concern. Alert is one of the rare words that can be used in the same form as a noun, verb, and adjective. In all parts of speech, alert implies preparedness.