insomniac

1. Someone who cannot sleep (synset 110228349)
   is a type of: diseased person, sick person, sufferer - a person suffering from an illness
   same as: sleepless person

1. Experiencing or accompanied by sleeplessness (synset 300188664)
   "insomniac old people"; "insomniac nights"; "lay sleepless all night"; "twenty watchful, weary, tedious nights"
   similar to: awake - not in a state of sleep; completely conscious
   same as: sleepless, watchful

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