wakefulness

noun

1. a periodic state during which you are conscious and aware of the world

   noun.cognition

   Examples

   Consciousness during wakefulness in a sane person is pretty well ordered and familiar.

   Source: WordNet 3.0

2. a temporary state in which you are unable (or unwilling) to sleep

   noun.state

   Examples

   Accept your wakefulness and sleep in its own contrary way is more likely to come.

   Synonyms sleeplessness

   Antonyms drowsiness sleepiness somnolence

   Source: WordNet 3.0

3. the process of paying close and continuous attention

   noun.cognition

   Examples

   Wakefulness, watchfulness, and bellicosity make a good hunter.

   Synonyms alertness vigilance watchfulness

   Source: WordNet 3.0