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Origin and history of insomnia

insomnia(n.)

"chronic inability to sleep," 1620s, insomnie, from Latin insomnia "want of sleep, sleeplessness," from insomnis "sleepless," from in- "not" (see in- (1)) + somnus "sleep" (from PIE root *swep- "to sleep"). The re-Latinized form is from 1758.

Entries linking to insomnia

"excessive sleeping or morbid sleepiness," 1863; see hyper- + ending from insomnia. Related: Hypersomniac.

1877 (adj.); 1879 (n.), from insomnia. Earlier was insomnious (1650s).

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