sleepiness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Adenosine accumulates during periods of wakefulness and helps reduce brain activity, contributing to feelings of sleepiness.

From Science Daily • May 30, 2026

It’s acquiring Centessa Pharmaceuticals, which is working on orexin receptor 2 agonists for conditions like narcolepsy and idiopathic hypersomnia — forms of daytime sleepiness.

From MarketWatch • Mar. 31, 2026

Among patients who received a high dose of the drug, 12% reported sleepiness, compared to 6% on placebo.

From Barron's • Dec. 31, 2025

She warns of side effects like sleepiness since experiencing them herself.

From The Wall Street Journal • Dec. 25, 2025

Mr. Dursley might have been drifting into an uneasy sleep, but the cat on the wall outside was showing no sign of sleepiness.

From "Harry Potter and the Sorcerer's Stone" by J.K. Rowling