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.
After seeking out a nearby fishmonger and calculating what this ingredient would cost me (a precious $30 per pound), I was left with a minor headache. Nina Moskowitz, Bon Appetit Magazine, 10 May 2026 Hantavirus pulmonary syndrome causes fatigue, fever, muscle aches, abdominal problems, headaches, chills and dizziness in the early stages, and late symptoms include chest tightness, coughing, shortness of breath and lungs filling with fluid. Mary Whitfill Roeloffs, Forbes.com, 10 May 2026 Other early-onset symptoms may include fever, chills, muscle aches, headaches, nausea, stomach pain, vomiting and diarrhea, according to the Mayo Clinic. Allison Kiehl, Chicago Tribune, 9 May 2026 Sewage ejection sumps are future headaches, in my opinion. Tim Carter, Hartford Courant, 9 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

Browse Nearby Words

Cite this Entry

“Headache.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/headache. Accessed 12 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

More from Merriam-Webster on headache

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster