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  1. alert

    • IPA[əˈləːt]


    • adj.
      quick to notice any unusual and potentially dangerous or difficult circumstances; vigilant;able to think clearly; intellectually active
    • n.
      the state of being watchful for possible danger;an announcement or signal warning of danger
    • v.
      warn (someone) of a danger or problem
    • verb: alert, 3rd person present: alerts, gerund or present participle: alerting, past tense: alerted, past participle: alerted

    • noun: alert, plural noun: alerts

    • 釋義




    • 1. warn (someone) of a danger or problem he alerted people to the dangers of smoking police were alerted after three men drove away without paying