Definitions:

1. a periodic state during which you are conscious and aware of the world noun
   • 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 noun
   • accept your wakefulness and sleep in its own contrary way is more likely to come
3. the process of paying close and continuous attention noun
   • wakefulness, watchfulness, and bellicosity make a good hunter

Synonyms:

• alertness
• sleeplessness