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

Not everyone with a mild headache needs a CT scan of the brain. —Paul Hsieh, Forbes.com, 29 Apr. 2025

Dehydration can be dangerous and may result in headaches, fatigue, dizziness, and other unpleasant symptoms, according to the Cleveland Clinic. —Sarah Klein, Time, 29 Apr. 2025

Tuten and Allen make the backfield a bigger headache than ever before for fantasy managers to navigate, but Tuten has serious speed. —Jake Ciely, New York Times, 27 Apr. 2025

Fifteen students were sent to the school nurse and reported having stomach aches and headaches, the affidavit said. —Stepheny Price, FOXNews.com, 26 Apr. 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

Rhymes for headache

• awake
• backache
• beefsteak
• betake
• cheesecake
• cupcake
• daybreak
• earthquake
• eastlake
• forsake
• handshake
• heartache

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