headache

noun

head·​ache ˈhed-ˌāk 

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

ˈhed-ˌā-kē 

Synonyms

• bear
• beast
• chore
• job
• killer
• labor

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

The parasites' arrival in the central nervous system is often marked by a headache. —Ars Technica, 13 Feb. 2025

But the unusual dismissal order comes with strings attached that could cause continued legal headaches for Adams and put pressure on him to do more to help Trump’s administration with immigration enforcement, experts, including former federal prosecutors and judges, told the Daily News on Tuesday. —Josephine Stratman, New York Daily News, 11 Feb. 2025

Your child shows physical signs of stress like frequent headaches, stomachaches, or changes in appetite. —Lauryn Higgins, Parents, 11 Feb. 2025

Arceneaux experienced headaches, nasal congestion, and intense back pain as her spinal column stretched in microgravity. —Dhruv Khullar, The New Yorker, 10 Feb. 2025

Word History

First Known Use

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

Phrases Containing headache

• cluster headache
• ice-cream headache
• pre-headache
• sick headache
• splitting headache
• tension headache

Video

An Abbreviated History of American English Spelling

Soop, wimmen, and headake did not make the cut

Kids Definition

headache

noun

head·​ache ˈhed-ˌāk 

1

: pain in the head

2

: an annoying or baffling situation or problem

headachy

-ˌā-kē 

adjective

Medical Definition

headache

noun

head·​ache ˈhed-ˌāk 

: pain in the head

called also cephalalgia

headachy

-ˌā-kē 

adjective