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 Similarly to ashwagandha, the root of the valerian plant is used as a medicinal herb that’s known to promote sleep and relieve insomnia. — Lauren Jarvis-Gibson july 25, Miami Herald, 25 July 2026 How Gut Health Affects Sleep About a third of adults have at least one symptom of chronic insomnia, which refers to trouble falling or staying asleep at least three nights a week for three months or longer. — Erica Sweeney, EverydayHealth.com, 24 July 2026 On Friday, the panel voted 7-4 to add epitalon to the list for insomnia, again voting along similar lines. — Lizzy Lawrence, STAT, 24 July 2026 Better management of insomnia Biphasic sleep means two distinct sleep periods in 24 hours instead of one. — Chas Newkey-Burden, TheWeek, 23 July 2026 See All Example Sentences for insomnia

Recent Examples of Synonyms for insomnia

Noun

Mars in Gemini, on the other hand, moves through life with speed, curiosity and mental restlessness.

— Valerie Mesa, PEOPLE, 29 July 2026
Standing on opposite sides of the protests, the pair fall for each other despite the divide, recognizing in one another a restlessness neither can quite name.

— Leo Barraclough, Variety, 23 July 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

Within weeks, the pattern looked closer to anxiety than disagreement, including sleeplessness and panic before meetings.

— Expert Panel®, Forbes.com, 27 July 2026
Because of their history of poor sleep, people with insomnia may suffer from anxiety about getting inadequate sleep, which can then increase sleeplessness at night.

— Lauren Jarvis-Gibson July 18, Fort Worth Star-Telegram, 18 July 2026

Definition of sleeplessness

Noun

The replacement of old, negative patterns of thinking with pure thoughts from God, Love, requires alertness.

— Linda Berckmann, Christian Science Monitor, 3 Aug. 2026
The lack of sleep and lack of rest wears down firefighters physically and mentally; the mental alertness, the mental sharpness is not always there, and also the burnout.

— Rashad Williams, CBS News, 31 July 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 5 Aug. 2026.

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Synonyms of insomnia

noun

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