Definition of 'alertness'

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Noun

1. the process of paying close and continuous attention; "wakefulness, watchfulness, and bellicosity make a good hunter"; "vigilance is especially susceptible to fatigue"
      Synonyms: watchfulness wakefulness vigilance
2. a state of readiness to respond; "alerting was indicated by the desynchronization of the EEG"
      Synonyms: alerting
3. lively attentiveness
      Synonyms: sharp-sightedness on the qui vive

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