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 of headache

• job
• killer
• burden
• effort

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

People who get sick typically develop a sudden high fever along with a pounding headache, pain behind the eyes and deep aches in the muscles, joints and bones. — Andrés Henao, CNN Money, 21 Sep. 2026

There will be recruiting battles and NIL headaches and portal defections and angry message boards and all the other insanity that comes with coaching at a place where fans consider 9-3 an average record rather than an accomplishment. — Mike Bianchi, The Orlando Sentinel, 20 Sep. 2026

The agency might even take the opportunity to completely redesign the disastrous Ashland, Armitage and Elston Avenue intersection and save generations of Chicagoans the headache of spending 15 minutes navigating through a single stoplight. — Chicago Tribune, 19 Sep. 2026

In another incident that gave Europe a headache, officials suggested Russia was behind a drone that breached Lithuania’s airspace earlier this month. — Emily Hallas, The Washington Examiner, 18 Sep. 2026

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
• forsake
• gouache
• 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