as in wakeful
not sleeping or able to sleep
lay sleepless with worry
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Recent Examples of sleepless
And while a $3,000 mattress or a 22-step wind-down routine may look like the answer to your sleepless nights, the real answer is likely to be far more accessible, like keeping a consistent sleep-wake schedule and sharpening your sleep hygiene.
—
Sharon Brandwein,
USA Today,
2 June 2026
Night sweats, sleepless nights, brain fog; the search for relief has driven some to get creative in the drugstore aisle, combining daily antihistamines like Allegra or Claritin with antacids like Pepcid AC.
—
Helen Carefoot,
Flow Space,
29 May 2026
There have been plenty of sleepless nights for Betts so far this season.
—
Katie Woo,
New York Times,
27 May 2026
This debt burden leads to higher stress and sleepless nights, and directly undermines the focus and efficiency of Americans in their prime working years.
—
Mary Moreland,
Fortune,
17 May 2026
See All Example Sentences for sleepless
Sharon Brandwein,
USA Today,
2 June 2026
Night sweats, sleepless nights, brain fog; the search for relief has driven some to get creative in the drugstore aisle, combining daily antihistamines like Allegra or Claritin with antacids like Pepcid AC.
—
Helen Carefoot,
Flow Space,
29 May 2026
There have been plenty of sleepless nights for Betts so far this season.
—
Katie Woo,
New York Times,
27 May 2026
This debt burden leads to higher stress and sleepless nights, and directly undermines the focus and efficiency of Americans in their prime working years.
—
Mary Moreland,
Fortune,
17 May 2026
See All Example Sentences for sleepless
Recent Examples of Synonyms for sleepless
Adjective
-
Low to medium doses show a reduction in the alpha frequency of brain waves (which correspond to relaxed and wakeful states), along with rising entropy, a signature finding of sober brains sinking deeper into a trip.
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Having the right pillow can make a big difference between a peaceful night’s sleep and a restless, wakeful one.
Adjective
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For example, don’t lay awake at night thinking about tomorrow's tasks.
-
Maybe staying awake to novel experiences is the key to vitality.
Cite this Entry
“Sleepless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sleepless. Accessed 4 Jul. 2026.
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