[syn: alertness, sharp-sightedness, on the qui vive]
The Collaborative International Dictionary of English v.0.48:
Alertness \A*lert"ness\, n.
The quality of being alert or on the alert; briskness;
WordNet (r) 3.0 (2006):
n 1: the process of paying close and continuous attention;
"wakefulness, watchfulness, and bellicosity make a good
hunter"; "vigilance is especially susceptible to fatigue"
[syn: watchfulness, wakefulness, vigilance,
2: a state of readiness to respond; "alerting was indicated by
the desynchronization of the EEG" [syn: alertness,
3: lively attentiveness [syn: alertness, sharp-sightedness,
on the qui vive]