wakefulness

nouns

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"
wakefulness
is a type of (narrower)
the state of remaining awake
"days of danger and nights of waking"
waking
is a type of (narrower)
the condition or state of the body or bodily functions
physical condition, physiological condition, physiological state
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"
sleeplessness, wakefulness
is derived from
wakeful
antonym
sleepiness
the process of paying close and continuous attention
"wakefulness, watchfulness, and bellicosity make a good hunter"; "vigilance is especially susceptible to fatigue"
alertness, vigilance, wakefulness, watchfulness
is derived from
wakeful