Insomnia

//ɪnˈsɒmniə// noun, slang

Definitions

Noun
  1. 1
    A sleeping disorder that is known for its symptoms of unrest and the inability to sleep. countable, uncountable

    "My mother suffers from insomnia."

  2. 2
    an inability to sleep; chronic sleeplessness wordnet
  3. 3
    Temporary inability to sleep. countable, informal, uncountable

Etymology

Borrowed from Latin īnsomnia, from Latin in- (“without”) + somnus (“sleep”, noun) + -ia, equivalent to in- + somn- + -ia.

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