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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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 insomnia Clancy’s psychiatrist already took the stand to discuss the defendant’s anxiety in September, which turned into insomnia in October, after she was prescribed the anti-depressant Zoloft. — Colleen Cronin, Boston Herald, 11 Aug. 2026 Chronic insomnia affects millions of middle-aged and older adults, raising the risk of heart disease, stroke and cognitive decline. — Hanna Wickes, Fort Worth Star-Telegram, 6 Aug. 2026 Researchers enrolled 200 Chinese adults over 50 and randomly assigned them to either tai chi or cognitive behavioral therapy for chronic insomnia. — Hanna Wickes, Sacbee.com, 6 Aug. 2026 The rise of wearables has produced a new problem called orthosomnia, in which anxiety over achieving perfect sleep data actually creates insomnia. — Hanna Wickes, Miami Herald, 5 Aug. 2026 See All Example Sentences for insomnia

Recent Examples of Synonyms for insomnia

Noun

Symptoms Symptoms can include sleeplessness, extreme worry about the baby or childbirth, restlessness and a racing heartbeat.

— Jen Christensen, CNN Money, 13 Aug. 2026
Shares in Lionsgate extended their losses Wednesday after an activist investor expressed restlessness with the company’s stance on AI.

— Dade Hayes, Deadline, 12 Aug. 2026

Definition of restlessness

Noun

But in people with narcolepsy, such boundaries become blurred, allowing elements of sleep to intrude into wakefulness in varying ways.

— Daryl Austin, USA Today, 8 July 2026
The clinical data demonstrated significant improvements in wakefulness and reductions in excessive daytime sleepiness at week eight, outperforming the placebo with a generally favorable safety profile.

— Sasirekha Subramanian, Forbes.com, 29 June 2026

Definition of wakefulness

Noun

Symptoms Symptoms can include sleeplessness, extreme worry about the baby or childbirth, restlessness and a racing heartbeat.

— Jen Christensen, CNN Money, 13 Aug. 2026
When a roadside bomb struck his Humvee convoy months later, the explosion’s shock wave swept through his body before headaches and sleeplessness set in for days.

— ABC News, ABC News, 6 Aug. 2026

Definition of sleeplessness

Noun

As evening arrives, the body releases melatonin to signal rest while cortisol, the alertness hormone, drops.

— Samantha Agate, Miami Herald, 8 Aug. 2026
The replacement of old, negative patterns of thinking with pure thoughts from God, Love, requires alertness.

— Linda Berckmann, Christian Science Monitor, 3 Aug. 2026

Definition of alertness

Browse Nearby Words

insolvents

insomnia

insomniac

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Style

“Insomnia.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insomnia. Accessed 15 Aug. 2026.

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Synonyms of insomnia

noun

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