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
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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
-
Opioids can cause drowsiness and dizziness.—
Andrew Yockey,
The Conversation,
11 Sep. 2025
-
Taking a higher dose can increase the relaxation and sleep effects, potentially leading to drowsiness upon waking.—
Ayesha Gulzar,
Verywell Health,
10 Sep. 2025
Noun
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Both women opened up their seasons with monstrous times, with no sign of post-Olympic fatigue.—
Katelyn Hutchison,
Forbes.com,
13 Sep. 2025
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Physical and psychological illnesses including depression, anxiety, fatigue and oral health issues were also tied to later eating.—
Deirdre Bardolf,
FOXNews.com,
13 Sep. 2025
Noun
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That represents a 6% increase from last year, despite a state law banning public sleeping.—
Miami Herald archives,
Miami Herald,
17 Sep. 2025
-
Nearby lies a king-sized bed, which is the only sleeping area.—
New Atlas,
New Atlas,
16 Sep. 2025
Noun
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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 18 Sep. 2025.
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