as in wakeful
not sleeping or able to sleep
lay sleepless with worry
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of sleepless
For generations, people have believed that the Moon has the power to stir up sleepless nights and strange behavior – even madness itself.
—
Joanna Fong-Isariyawongse, The Conversation, 21 Oct. 2025
In a way, the first moments in the story between Victor and The Creature are a study of parenthood and the quick madness that ensues from sleepless nights and uncertainty.
—Billie Melissa, MSNBC Newsweek, 13 Oct. 2025
After enduring a sleepless night while the settlers slept on their library floor, the Khalidi family regrouped in the morning.
—Ryan Byrnes, Literary Hub, 7 Oct. 2025
Members of the Afghan diaspora spent hours, and sleepless nights, trying to call and text relatives, friends and colleagues back home.
—Hilary Whiteman, CNN Money, 3 Oct. 2025
See All Example Sentences for sleepless
Joanna Fong-Isariyawongse, The Conversation, 21 Oct. 2025
In a way, the first moments in the story between Victor and The Creature are a study of parenthood and the quick madness that ensues from sleepless nights and uncertainty.
—Billie Melissa, MSNBC Newsweek, 13 Oct. 2025
After enduring a sleepless night while the settlers slept on their library floor, the Khalidi family regrouped in the morning.
—Ryan Byrnes, Literary Hub, 7 Oct. 2025
Members of the Afghan diaspora spent hours, and sleepless nights, trying to call and text relatives, friends and colleagues back home.
—Hilary Whiteman, CNN Money, 3 Oct. 2025
See All Example Sentences for sleepless
Recent Examples of Synonyms for sleepless
Adjective
-
Tips to Break the Bedtime Screen Habit Dr. Verma, who was not involved in the research, offers the following tips to prevent wakeful effects from smartphones and get better sleep: Avoid screens 30 to 60 minutes before bedtime.—
Emily Kay Votruba,
EverydayHealth.com,
31 Mar. 2025
-
Lauren Goode: Who among us doesn't want to have a nap gently guided by our wakeful rhythm?—
Lauren Goode,
WIRED,
16 Jan. 2025
Adjective
-
All the firefighters were awake and alert, Esposito said.—
Phil Helsel,
NBC news,
6 Nov. 2025
-
That night, after the talent show and dinner and homework, Emily lay awake in bed, unable to sleep.—
Jamie Thompson,
The Atlantic,
6 Nov. 2025
Cite this Entry
“Sleepless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sleepless. Accessed 26 Nov. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share