Alert meaning

What does “alert” mean? Definitions, examples, synonyms and opposites.

“alert” is a noun, verb and adjective with 7 meanings. Its most common meaning is: condition of heightened watchfulness or preparation for action.

alert

noun

  1. condition of heightened watchfulness or preparation for action

    “bombers were put on alert during the crisis”

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

    Synonymsalerting
  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

    “The empty house alarmed him”

    “We alerted the new neighbors to the high rate of burglaries”

    Synonymsalarm

adjective

  1. engaged in or accustomed to close observation

    “caught by a couple of alert cops”

    “alert enough to spot the opportunity when it came”

    Synonymswatchful
    Oppositesunalert
  2. quick and energetic

    “a brisk walk in the park”

    “a lively gait”

  3. mentally perceptive and responsive

    “an alert mind”

    “alert to the problems”

    Synonymsaliveawake

Source: WordNet 3.1, Princeton University