Definition

Adverb: * In a manner characterized by an inability to sleep; while being awake and alert, often due to worry, excitement, or illness. It describes the state or action of someone who is not sleeping.

Usage

The adverb "sleeplessly" modifies a verb to describe how an action is performed—specifically, while in a state of sleeplessness. It is often used with verbs related to rest, thought, or nighttime activity. * It typically follows the verb it modifies (e.g., "tossed sleeplessly"). * It can be placed at the beginning of a clause for emphasis (e.g., "Sleeplessly, she watched the clock.").

Examples

• He lay sleeplessly in the dark, listening to the sounds of the city.
• The anxious student paced sleeplessly the night before the exam.
• Sleeplessly, she reviewed the plan over and over in her mind.
• For hours, he stared sleeplessly at the ceiling.

Advanced Usage

• "to spend the night sleeplessly": to pass the entire night without sleeping.
  • He spent the night sleeplessly, worrying about the upcoming meeting.

Variants and Related Words

• Sleepless (adjective): Characterized by or experiencing a lack of sleep.
  • After the sleepless night, she felt exhausted.
• Sleeplessness (noun): The condition of being unable to sleep; insomnia.
  • Chronic sleeplessness can affect your health.

Synonyms

• Restlessly: In a way that shows an inability to rest or be still.
• Wide awake: Fully awake and alert.
• Insomniacally (less common): In a manner related to insomnia.

Antonyms

• Soundly: In a deep and undisturbed manner.
• Peacefully: In a calm and quiet manner, without disturbance.

Adverb

1. without sleep; in a sleepless manner
   • he was lying in bed sleeplessly