Agrypnia

Part of speech: noun

Definitions

1. A prolonged state of wakefulness that severely impacts physical and mental well-being A condition involving persistent insomnia that results in a lack of restorative sleep An ongoing struggle with sleeplessness resulting in considerable fatigue and reduced cognitive function
2. A chronic state marked by an ongoing failure to achieve normal sleep, causing high levels of fatigue and impairment
3. A continual condition where sleep is persistently prevented, leading to exhaustion and mental strain

Etymology: Ancient Greek "agrupnía" meant "sleeplessness" or "vigilance," and it was built from "a-," a negative prefix meaning "not," and "hypnos," "sleep." The same root gives English "hypnosis" and "hypnotic," so the Greek word literally describes being without sleep, a state of wakefulness that was seen as something to be endured rather than enjoyed. The Greek term came into English through Latin and medical writing, where it was used for the condition of persistent wakefulness, an inability to sleep that physicians regarded as a symptom of illness. Here the word was not used for a passing night of restlessness but for a sustained, chronic state. The word has stayed closely tied to that clinical sense, and its meaning has changed very little from the Greek original.

Synonyms: insomnia

Antonyms: sleep