headache

noun

head·​ache ˈhed-ˌāk How to pronounce headache (audio)
Synonyms of headachenext
1
: pain in the head
2
: a vexatious or baffling situation or problem
… meetings had become a giant headache.Franklin Foer
headachy adjective
or less commonly headachey

Examples of headache in a Sentence

I'm starting to get a headache. The symptoms include fever and headache. The city's biggest headache is traffic. Managing your finances can be a real headache.
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.
Most people who are infected with West Nile virus will not develop symptoms, but those who do may experience a mild form of the illness, which can include fever, headache, body aches, swollen lymph glands or a rash, according to the IDOH. Michelle L. Quinn, Chicago Tribune, 6 June 2026 However, the headaches didn't go away after Cara completed the tests. Toria Sheffield, PEOPLE, 6 June 2026 His ability in one-versus-one situations is a headache for any team facing Brazil. Ahmed Walid, New York Times, 5 June 2026 Humming cooling systems, rumbling diesel generators and whirring fans can be heard continuously hundreds of feet around them, according to the Environmental and Energy Study Institute, prompting reports from residents of headaches, vertigo, nausea, sleep disturbances, ear pain and hypertension. N'dea Yancey-Bragg, USA Today, 4 June 2026 See All Example Sentences for headache

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Time Traveler
The first known use of headache was before the 12th century

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Cite this Entry

“Headache.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/headache. Accessed 14 Jun. 2026.

Kids Definition

headache

noun
head·​ache ˈhed-ˌāk How to pronounce headache (audio)
1
: pain in the head
2
: an annoying or baffling situation or problem
headachy adjective

Medical Definition

headache

noun
head·​ache ˈhed-ˌāk How to pronounce headache (audio)
: pain in the head

called also cephalalgia

headachy adjective

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