[syn: watchfulness, wakefulness, vigilance, alertness]
The Collaborative International Dictionary of English v.0.48:
Wakeful \Wake"ful\, a.
Not sleeping; indisposed to sleep; watchful; vigilant.
Dissembling sleep, but wakeful with the fright.
[1913 Webster] -- Wake"ful*ly, adv. -- Wake"ful*ness, n.
WordNet (r) 3.0 (2006):
n 1: a periodic state during which you are conscious and aware
of the world; "consciousness during wakefulness in a sane
person is pretty well ordered and familiar"
2: a temporary state in which you are unable (or unwilling) to
sleep; "accept your wakefulness and sleep in its own contrary
way is more likely to come" [syn: wakefulness,
sleeplessness] [ant: drowsiness, sleepiness,
3: 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,