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Adjective: insomniac  in'sóm-nee`ak
  1. Experiencing or accompanied by sleeplessness
    "insomniac old people"; "insomniac nights"
    - sleepless, watchful
Noun: insomniac  in'sóm-nee`ak
  1. Someone who cannot sleep
    - sleepless person

Derived forms: insomniacs

See also: awake

Type of: diseased person, sick person, sufferer

Encyclopedia: Insomniac

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