as in drowsiness
the quality or state of desiring or needing sleep
the truck driver keeps a thermos of coffee with him to stave off sleepiness
Synonyms & Similar Words
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Antonyms & Near Antonyms
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Recent Examples of sleepiness
Later breakfast time was consistently connected with having physical and mental health conditions such as depression, excessive sleepiness, and dental problems.
—
Tom Gavin, EverydayHealth.com, 5 Sep. 2025
However, sleepiness returns when the caffeine wears off.
—Ashley Olivine, Verywell Health, 28 Aug. 2025
Is your sleepiness a symbol of your love?
—Mark Travers, Forbes.com, 25 Aug. 2025
Essentially, high levels of this metabolite is an indication that the body is responding to stress effectively, and people with more of it were less likely to report daytime sleepiness.
—New Atlas, 24 Aug. 2025
Very short naps have been shown to reduce sleepiness and lift mood and to boost alertness immediately after waking, with 10-minute naps often performing best among brief options.
—Allison Palmer
august 19, Sacbee.com, 19 Aug. 2025
The condition leads to loud snoring, restless sleep, daytime sleepiness and increases the risk of high blood pressure, heart disease and stroke.
—Hannah Millington, MSNBC Newsweek, 10 Aug. 2025
Tom Gavin, EverydayHealth.com, 5 Sep. 2025
However, sleepiness returns when the caffeine wears off.
—Ashley Olivine, Verywell Health, 28 Aug. 2025
Is your sleepiness a symbol of your love?
—Mark Travers, Forbes.com, 25 Aug. 2025
Essentially, high levels of this metabolite is an indication that the body is responding to stress effectively, and people with more of it were less likely to report daytime sleepiness.
—New Atlas, 24 Aug. 2025
Very short naps have been shown to reduce sleepiness and lift mood and to boost alertness immediately after waking, with 10-minute naps often performing best among brief options.
—Allison Palmer
august 19, Sacbee.com, 19 Aug. 2025
The condition leads to loud snoring, restless sleep, daytime sleepiness and increases the risk of high blood pressure, heart disease and stroke.
—Hannah Millington, MSNBC Newsweek, 10 Aug. 2025
Recent Examples of Synonyms for sleepiness
Noun
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Against all of this allegedly heady stuff, the score—by Trent Reznor and Atticus Ross—intentionally jars us from encroaching drowsiness with chortling woodwinds and shardlike piano chords that are the aural equivalent of jagged Plexiglass off-cuts.—
Stephanie Zacharek,
Time,
29 Aug. 2025
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The Institute said the study found that distraction alerts were far more common than drowsiness warnings, which aligns with previous research showing visible drowsiness is quite rare.—
Jamie L. LaReau,
USA Today,
29 Aug. 2025
Noun
-
It’s always conducted in the blind, with protocols employed to avoid any undue influence, from pay-to-play to palate fatigue.—
Brad Japhe,
Forbes.com,
7 Sep. 2025
-
Lisa Healy, 29, from Toronto, Canada, battled decades of fatigue, weakness and low energy, which affected her mood and was often described as sadness.—
Lucy Notarantonio,
MSNBC Newsweek,
7 Sep. 2025
Noun
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Stuffed animals, extra bedding, sleeping bags, and mattresses fall in this category as well.—
Mary Shannon Wells,
Southern Living,
3 Sep. 2025
-
Right now, shoppers can score big on outdoor essentials, with deals on tents, sleeping pads, comfortable hiking boots, and rugged clothing starting at just $9.—
Asia London Palomba,
Travel + Leisure,
31 Aug. 2025
Noun
-
The people went to the emergency department with tachycardia, confusion, anxiety or somnolence, and nausea after eating gummy candies labeled as containing Amanita muscaria mushrooms.—
Beth Mole,
Ars Technica,
19 July 2024
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Organized labor shows corporate managements who’s the boss: This year continued the strengthening of union power after decades of somnolence.—
Michael Hiltzik,
Los Angeles Times,
21 Dec. 2023
Cite this Entry
“Sleepiness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sleepiness. Accessed 11 Sep. 2025.
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