The act or practice of somnambulating; sleepwalking
The act of close or careful observing or listening:
Insomnia is defined as an ongoing inability to sleep or stay asleep.
A sleepy quality or state
Find another word for wakefulness. In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for wakefulness, like: vigilance, alertness, wariness, sleeplessness, somnambulism, pernoctation, attention, prudence, insomnia, watchfulness and awareness.