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.
Pilgrims describe Hajj as a once-in-a-lifetime obligation that transcends politics, justifying high costs, logistical headaches and security fears. Mariam Fam, Los Angeles Times, 24 May 2026 Inhaling that vapor can cause damage, including irritation to the eyes and nose, respiratory tract and lungs, bringing on symptoms like sore throats, runny noses, itching and burning eyes, dizziness, headaches and nausea. Sierra Van Der Brug, Oc Register, 23 May 2026 Goodson says that individuals with histamine intolerance may experience symptoms like headaches or digestive discomfort when consuming fermented foods, as these products can be naturally high in histamines. Daryl Austin, USA Today, 23 May 2026 In mid-October 2015 residents of the Porter Ranch neighborhood in northwestern Los Angeles started suffering from headaches, nausea, dizziness, and nosebleeds. Jonathan Mingle, The New York Review of Books, 23 May 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 25 May. 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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