| noun | 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” |
| noun | 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” |
| noun | the process of paying close and continuous attention “wakefulness, watchfulness, and bellicosity make a good hunter” |
| wakeful | adjective | (of sleep) easily disturbed |
| sleepless | adjective | experiencing or accompanied by sleeplessness; ; ; ; - Shakespeare |
| watchful | adjective | engaged in or accustomed to close observation |
| vigilant | adjective | carefully observant or attentive; on the lookout for possible danger |
| alert | adjective | mentally perceptive and responsive |