WAKEFULNESS
wakefulness
(noun) 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”
watchfulness, wakefulness, vigilance, alertness
(noun) the process of paying close and continuous attention; “wakefulness, watchfulness, and bellicosity make a good hunter”; “vigilance is especially susceptible to fatigue”
wakefulness, sleeplessness
(noun) 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”
Source: WordNet® 3.1
Etymology
Noun
wakefulness (countable and uncountable, plural wakefulnesses)
The state of being wakeful.
Source: Wiktionary