noun (n)

• a state of readiness to respond

  keadaan kesediaan merespon

  Example:
  Alerting was indicated by the desynchronization of the EEG.
  

  Synonym:
  alertness
  

  source: wordnet30
• a warning serves to make you more alert to danger

  peringatan melayani untuk membuat anda lebih waspada dengan bahaya

  Synonym:
  alert
  

  source: wordnet30