Definition of 'alertness'
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- 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
- a state of readiness to respond; "alerting was indicated by the desynchronization of the EEG"
- lively attentiveness
Synonyms: sharp-sightedness on the qui vive