alert — English Dictionary

alert
Pronunciations (2)
  • /əˈlɜːt/
    Pronunciation notes
    • Received-Pronunciation
  • /əˈlɝt/
    Pronunciation notes
    • General-American

Adjective

  1. Attentive; awake; on guard.

    Synonyms
  2. brisk; nimble; moving with celerity.

    Usage
    • Obsolete
    Examples

    I saw an alert young fellow that cocked his hat upon a friend of his who entered just at the same time with myself

Noun

  1. An alarm.

  2. A notification of higher importance than an advisory.

  3. A state of readiness for potential combat.

    Examples

    an airborne alert; ground alert

  4. Synonym of bell (“bell character”).

Verb

  1. To give warning to.

Adjective

  1. engaged in or accustomed to close observation

    Synonyms
    Antonyms
    Examples

    caught by a couple of alert cops

    alert enough to spot the opportunity when it came

    More examples (1)

    constantly alert and vigilant, like a sentinel on duty

  2. quick and energetic

    Examples

    a brisk walk in the park

    a lively gait

    More examples (4)

    a merry chase

    traveling at a rattling rate

    a snappy pace

    a spanking breeze

  3. mentally perceptive and responsive

    Synonyms
    Examples

    an alert mind

    alert to the problems

    More examples (3)

    alive to what is going on

    awake to the dangers of her situation

    was now awake to the reality of his predicament

Noun

  1. condition of heightened watchfulness or preparation for action

    Synonyms
    Examples

    bombers were put on alert during the crisis

  2. a warning serves to make you more alert to danger

    Synonyms
    Broader terms
  3. an automatic signal (usually a sound) warning of danger

Verb

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

    Synonyms
    Broader terms
    Examples

    The empty house alarmed him

    We alerted the new neighbors to the high rate of burglaries

Word forms
more alertmost alertalertsalertsalertingalertedalerted

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