Similar words: carefulness, wastefulness, gracefulness, peacefulness, gratefulness, resourcefulness, joyfulness, painfulness. Meaning: n. 1. a periodic state during which you are conscious and aware of the world 2. a temporary state in which you are unable (or unwilling) to sleep 3. the process of paying close and continuous attention.
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31. The team was looking for a natural clock in the body that controls sleep and wakefulness.
32. Researchers have theorized that sleep may restore some chemical that is drained during periods of wakefulness.
33. The insomniac is habitually afflicted with wakefulness at times when he wishes to sleep.
34. Old Cheng fell asleep, but Xiangzi tossed and turned in wakefulness.
More similar words: carefulness, wastefulness, gracefulness, peacefulness, gratefulness, resourcefulness, joyfulness, painfulness, helpfulness, playfulness, unlawfulness, cheerfulness, watchfulness, thankfulness, truthfulness, faithfulness, wonderfulness, thoughtfulness, make full use of, fullness, make fun of, illness, coolness, wellness, stillness, casualness, naturalness, for goodness sake, poke fun at, wake.