insomniac

noun

plural insomniacs
Synonyms of insomniacnext
: a person affected with insomnia
Many insomniacs develop anxiety about going to bed and they fear sleeplessness, which can worsen insomnia.Andrew Weil

Examples of insomniac in a Sentence

Recent Examples on the Web
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.
Taqueria Hoy remains a refuge for factory workers, restaurant crews, tipsy clubbers, cops, families, insomniacs and others hungry in between. Brock Keeling, Oc Register, 3 June 2026 Our editors love the Beckham Hotel Collection Pillows just as much as five-star reviewers—many of whom are insomniacs—do, too. Stephanie Osmanski, Better Homes & Gardens, 19 May 2026 After all, what is the insomniac doing in the middle of the night but going over the past again and again? Literary Hub, 15 May 2026 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 Early risers and insomniacs alike know an entirely different Kansas City. Sofi Zeman january 8, Kansas City Star, 8 Jan. 2026 Schoolchildren, insomniacs and everyone in between began stumbling onto this little gem and telling their friends about it. Duante Beddingfield, Freep.com, 6 Nov. 2025 Hoosiers and insomniacs alike adored him. Katie Wiseman, IndyStar, 29 Oct. 2025

Word History

Etymology

insomnia + -ac

First Known Use

1879, in the meaning defined above

Time Traveler
The first known use of insomniac was in 1879

Browse Nearby Words

Cite this Entry

“Insomniac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insomniac. Accessed 9 Jun. 2026.

Kids Definition

insomniac

noun
in·​som·​ni·​ac
in-ˈsäm-nē-ˌak
: a person who has insomnia

Medical Definition

insomniac

1 of 2 noun
in·​som·​ni·​ac -nē-ˌak How to pronounce insomniac (audio)
: one affected with insomnia

insomniac

2 of 2 adjective
: affected with insomnia
an insomniac patient

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