Part of speech:
(Archaic) Not sleeping; awake.
someone who cannot sleep
Constantly moving, active, or alert
Find another word for insomniac. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for insomniac, like: watchful, sleepless person, victim of insomnia, light sleeper, broken sleeper, patient and sleepless.