Insomniac


a person who suffers from , the inability, especially when chronic, to obtain sufficient sleep, through difficulty in falling or staying asleep:
Her husband, an insomniac, had at last fallen asleep at the computer, head resting on the keyboard.
having :
a nervous, insomniac person.
Synonyms: sleepless, awake, wakeful, insomnolent, wide-awake.
Antonyms: sleepy, drowsy, lethargic, somnolent; asleep, sleeping, restful.
of, relating to, or causing :
long, torturous, insomniac nights.
Historical Examples

Most people are insomniac, mainly because they are overanxious about their sleep.
Psychotherapy James J. Walsh

Consciousness came back in little dribbles like a montage—half reality and half nightmare of the insomniac.
A Woman’s Place Mark Irvin Clifton

adjective
exhibiting or causing insomnia
noun
a person experiencing insomnia

1877 (adj.); 1879 (n.), from insomnia.

insomniac in·som·ni·ac (ĭn-sŏm’nē-āk’)
n.
One who suffers from insomnia. adj.
Having or causing insomnia.

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