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Noun: wakefulness  weykfulnus
  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"
    - sleeplessness
     
  3. The process of paying close and continuous attention
    "wakefulness, watchfulness, and bellicosity make a good hunter"
    - watchfulness, vigilance, alertness

Derived forms: wakefulnesses

See also: wakeful

Type of: attention, physical condition, physiological condition, physiological state, temporary state, waking

Antonym: sleepiness

Encyclopedia: Wakefulness