INSOMNIAC Synonyms: 40 Similar and Opposite Words

insomniac 1 of 2

adjective

in-ˈsäm-nē-ˌak

Definition of insomniac

as in wakeful

not sleeping or able to sleep an insomniac veteran tormented by his memories of the war

Synonyms & Similar Words

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Antonyms & Near Antonyms

insomniac

2 of 2

noun

as in riser

Related Words

riser
waker

Dissimilar Words

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 insomniac

Adjective

Even an insomniac film critic couldn’t see half of the films playing Fantasia 2025 during the three weeks of the festival. — Scott Phillips, Forbes.com, 6 Aug. 2025 The four-time Grammy winner dazzled exhibitors with a mini-concert at CinemaCon to jazz them up for the film, which follows a version of himself, an insomniac musician, who encounters a mysterious stranger. — Anthony D'alessandro, Deadline, 14 May 2025

Noun

And for a generation of insomniacs, nothing embodied the late-night spirit like Adult Swim. — Eric Vilas-Boas, Vulture, 18 Mar. 2026 Even for seasoned insomniacs, these changes can feel drastic. — Ellen O’Brien, SELF, 25 Feb. 2026 See All Example Sentences for insomniac

Recent Examples of Synonyms for insomniac

Adjective

Low to medium doses show a reduction in the alpha frequency of brain waves (which correspond to relaxed and wakeful states), along with rising entropy, a signature finding of sober brains sinking deeper into a trip.

— Oshan Jarow, Vox, 4 Nov. 2024
Having the right pillow can make a big difference between a peaceful night’s sleep and a restless, wakeful one.

— Casey Clark, Peoplemag, 9 Sep. 2024

Definition of wakeful

Noun

South Korean riser Haeran Ryu pursues her third major win in a row.

— Steven Louis Goldstein, New York Times, 31 July 2026
Expect travelers working on laptops by day, and by night, the motorized liquor riser—stacked with 1,500 bottles—steals the spotlight, a clever riff on NYC’s old automats.

— Condé Nast, Condé Nast Traveler, 7 July 2026

Definition of riser

Adjective

After her 2013 accident, Collett spent a week in a coma and only three days awake in hospital before being transferred to Oaksey House in Oxfordshire, England, the Injured Jockeys Fund’s rehabilitation centre.

— Gemma Redrup, New York Times, 13 Aug. 2026
The number one thing that should keep managers awake at night is worrying about whether they are being told the truth about the reality of the situation.

— Roger Trapp, Forbes.com, 12 Aug. 2026

Definition of awake

Browse Nearby Words

insomnia

insomniac

insomniacs

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Cite this Entry

Style

“Insomniac.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insomniac. Accessed 14 Aug. 2026.

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Synonyms of insomniac

adjective

noun

Example Sentences

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Cite this Entry

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