English to English
noun
- the process of paying close and continuous attention
Wakefulness, watchfulness, and bellicosity make a good hunter.
Vigilance is especially susceptible to fatigue.
source: WordNet 3.0
- a state of readiness to respond
Alerting was indicated by the desynchronization of the EEG.
source: WordNet 3.0
- lively attentiveness
source: WordNet 3.0
- The quality of being alert or on the alert; briskness; nimbleness; activity.
source: Webster 1913