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

In a previous university blog post, Majumdar compared this finding to the brain flushing out byproducts that build up during active, wakeful moments, allowing for a more restful night’s sleep.

— Mack DeGeurin, Popular Science, 9 Sep. 2026
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

Definition of wakeful

Noun

Eriksen is another riser who narrowly missed the cut for the overall top 10.

— Vincent Z. Mercogliano, New York Times, 8 Sep. 2026
Tickets with picnic-style general admission seating at CLARA Studios will cost $30 per person, while dedicated riser spots go for $60 per person.

— Camila Pedrosa, Sacbee.com, 31 Aug. 2026

Definition of riser

Adjective

Worry and the heat kept them awake at night, and their vacation had to be canceled because they were required to be available whenever needed.

— Elvira Navarro, Harpers Magazine, 22 Sep. 2026
The mom of four remained awake during the procedure, which has been lauded by several celebrities as a facelift alternative.

— Skyler Caruso, PEOPLE, 21 Sep. 2026

Definition of awake

Adjective

There were certainly plenty of long days and sleepless nights along the way, but seeing the finished space and what it has become made all of that hard work worthwhile.

— Blaine Callahan, Hartford Courant, 7 Sep. 2026
Nelson remembers hushing her foster children back to sleep that night and calling 911, anxious for an end to those sleepless nights.

— Kendrick Calfee, Kansas City Star, 2 Sep. 2026

Definition of sleepless

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 24 Sep. 2026.

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Synonyms of insomniac

adjective

noun

Example Sentences

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Cite this Entry

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