INSOMNIA Synonyms: 7 Similar and Opposite Words

insomnia

noun

in-ˈsäm-nē-ə

Definition of insomnia

as in restlessness

the inability to obtain adequate sleep has suffered from insomnia virtually his entire life

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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 insomnia New research is bringing sound sleep health into the gut-adjacent conversation, using genetic methodology to probe whether insomnia, sleep duration and daytime napping causally influence hemorrhoid risk. — Samantha Agate, Fort Worth Star-Telegram, 3 Sep. 2026 Woods checked into rehab shortly after that incident, saying his efforts to manage insomnia and pain from his staggering number of back surgeries on his own was a mistake. — Steve Henson, Los Angeles Times, 2 Sep. 2026 Here's what insomnia is, what causes it and how it's typically treated. — Daryl Austin, USA Today, 30 Aug. 2026 Common side effects include dizziness, fast heart rate, high blood pressure, anxiety, headache, insomnia and loss of appetite. — Jen Christensen, CNN Money, 29 Aug. 2026 See All Example Sentences for insomnia

Recent Examples of Synonyms for insomnia

Noun

For some people, consuming too much caffeine can cause symptoms such as nervousness, restlessness, headaches, and difficulty sleeping.

— Merve Ceylan, HEALTH, 9 Sep. 2026
That same day, the moon will reach its first quarter phase in Sagittarius, bringing an air of restlessness and expansion, encouraging us to stop overthinking and finally take a leap of faith.

— Valerie Mesa, PEOPLE, 1 Sep. 2026

Definition of restlessness

Noun

If a woman’s brain fog is recorded as early signs of dementia, her anxiety as psychiatric condition, or her sleeplessness as an isolated complaint, the symptom or misdiagnosis may enter the medical record, but its connection to menopause disappears.

— Yulin Hswen, STAT, 27 Aug. 2026
Symptoms Symptoms can include sleeplessness, extreme worry about the baby or childbirth, restlessness and a racing heartbeat.

— Jen Christensen, CNN Money, 13 Aug. 2026

Definition of sleeplessness

Noun

Specialized cells in the eyes detect changes in light and communicate with the brain’s circadian system, helping coordinate processes such as alertness and sleep.

— Ascend Agency, New York Daily News, 11 Sep. 2026
Drinking water in the morning may improve alertness and reaction speed.

— Merve Ceylan, HEALTH, 8 Sep. 2026

Definition of alertness

Browse Nearby Words

insolvents

insomnia

insomniac

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“Insomnia.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insomnia. Accessed 16 Sep. 2026.

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Synonyms of insomnia

noun

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