Insomnia Definition

ĭn-sŏmnē-ə
noun
Abnormally prolonged inability to sleep, esp. when chronic.
Webster's New World

A sleeping disorder that is known for its symptoms of unrest and the inability to sleep.

Wiktionary
Antonyms:

Other Word Forms of Insomnia

Noun

Singular:
insomnia
Plural:
insomnias

Origin of Insomnia

  • Latin īnsomnia from īnsomnis sleepless in- not in–1 somnus sleep swep- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin in- (“without”) +‎ somnus (“sleep”) +‎ -ia.

    From Wiktionary

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