wakefulness

n. absence of sleep; alertness, vigilance

Wakefulness refers to the state of being awake and is the behavioral manifestation of the metabolic state of catabolism. It is the daily recurring period in an organism's life during which consciousness, awareness and all behaviors necessary for survival, i.e., success in (Communication, ambulation, nutritional ingestion and procreation), are conducted. Being awake is the opposite of being asleep a behavioral manifestation of the daily recurring metabolic state of anabolism. Animals can eat and run, fly, swim or walk while awake; humans can also talk, listen, write, read, and productively think and work in the awake state.
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Wakefulness believed to occur when the tonic flow of impulses from the reticular activating system exceeds the critical level for sustaining [more]Wakefulness - Community and Resources

Noun
1. a periodic state during which you are conscious and aware of the world
(hypernym) waking
(hyponym) arousal
2. a temporary state in which you are unable (or unwilling) to sleep
(synonym) sleeplessness
(antonym) sleepiness, drowsiness, somnolence
(hypernym) temporary state

wakefulness /'weikfulnis/
danh từ sự mất ngủ, sự không ngủ được sự cảnh giác, sự tỉnh táo
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