This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
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n. The state of being wakeful.

n. The state or character of being wakeful; especially, indisposition or inability to sleep.

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

n. the process of paying close and continuous attention

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

"Cephalon is trying to maintain its domination of the so-called wakefulness drug market as Provigil loses patent protection in 2012."

waked    wakefulness    wakes    waking    woke    woken   

result    effect    event    issue    consequence    outcome    upshot    alarm    alert    moving ridge   

track    rouse    wakes    arvel    flock    in the wake of    arval   

watch    wait   

woke    woken   

stay up    sit up   

watch    awake    arouse    excite    reanimate    revive    vigil    wash    waken    awaken   

Ache    Blake    Drake    Haik    Jake    Lake    Snake    ache    ake    awake   

aftermath    midst    wave    rush    arrival    sign    consequence    eve    afraid    onset