Main entry: alertness, sharp-sightedness, on the qui vive
Definition: lively attentiveness
Main entry: alertness, watchfulness, vigilance, wakefulness
Definition: the process of paying close and continuous attention
Usage: wakefulness, watchfulness, and bellicosity make a good hunter; vigilance is especially susceptible to fatigue
Main entry: alerting, alertness
Definition: a state of readiness to respond
Usage: alerting was indicated by the desynchronization of the EEG