Definition

1. Adjective:

   • Experiencing or characterized by sleeplessness: Describes a person who has difficulty falling asleep or staying asleep, or a period of time marked by such sleeplessness.
   • Related to or causing sleeplessness: Pertaining to the condition of insomnia.

2. Noun:

   • A person who suffers from insomnia: Someone who chronically experiences an inability to sleep adequately.

Usage Examples

• Adjective:

  • The insomniac patient tried various relaxation techniques. (The patient suffering from sleeplessness tried various relaxation techniques.)
  • She spent another insomniac night staring at the ceiling. (She spent another sleepless night staring at the ceiling.)

• Noun:

  • As a lifelong insomniac, he was familiar with the sound of the 3 a.m. news. (As a person who has suffered from lifelong sleeplessness, he was familiar with the sound of the 3 a.m. news.)
  • The support group was helpful for fellow insomniacs. (The support group was helpful for fellow people who cannot sleep.)

Advanced Usage

• "Chronic insomniac": A person who suffers from long-term, persistent insomnia.

  • Chronic insomniacs often require medical intervention. (People with long-term sleeplessness often require medical intervention.)

• "Insomniac tendencies": A predisposition or recurring pattern of sleeplessness.

  • His insomniac tendencies worsened during times of stress. (His recurring patterns of sleeplessness worsened during times of stress.)

Variants and Related Words

• Insomnia (n): The condition of being unable to sleep.
  • Her insomnia made it hard to concentrate during the day.
• Insomniacally (adv): In a manner related to or characteristic of insomnia. (This form is rare but can be used descriptively).
  • He paced the floor insomniacally.

Synonyms

• Sleepless: Without sleep; experiencing a lack of sleep.
• Wakeful: Unable to sleep; characterized by being awake.
• Restless: Unable to rest or relax, often leading to sleeplessness.

Antonyms

• Somnolent: Sleepy; drowsy.
• Slumberous: Characterized by or suggestive of sleep.

Related Phrases/Idioms

• To have an insomniac streak: To have a period or inherent tendency of suffering from sleeplessness.
  • Ever since the project started, she's had an insomniac streak. (Ever since the project started, she's had a period of suffering from sleeplessness.)
• The insomniac's hour: A poetic or descriptive term for the late night/early morning hours when one cannot sleep.
  • He was a frequent visitor to the diner during the insomniac's hour. (He was a frequent visitor to the diner during the late-night hours associated with sleeplessness.)

Adjective

1. experiencing or accompanied by sleeplessness
   • insomniac old people
   • insomniac nights
   • lay sleepless all night
   • twenty watchful, weary, tedious nights- Shakespeare

Noun

1. someone who cannot sleep