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Word of the Day Wednesday, June 10, 2026

sleeplessness

/ˈsliːplɛsnəs/ noun · British & US
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What does sleeplessness mean?

noun

A state of being awake and unable to sleep, often due to stress, anxiety, or other factors. A lack of sleep or rest.

Example

"The patient's sleeplessness made it difficult for her to concentrate during the day."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for sleeplessness

Antonyms of sleeplessness

Rhymes with sleeplessness

Etymologically related