insomniac
noun
1 insomniac
Someone who cannot sleep.
synonym: sleepless person.
adjective
1 insomniac
Experiencing or accompanied by sleeplessness:
— Insomniac old people.
— Insomniac nights.
Moby thesaurus: alertness, all-night vigil, consciousness, insomnia, insomnious, insomnolence, insomnolency, lidless vigil, restless, restlessness, sentience, sleepless, sleeplessness, slumberless, tossing and turning, unsleeping, vigil, wake, wakeful, wakefulness.
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