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

Flyers should try to mitigate any headaches from delays and cancellations by avoiding booking flights with layovers, the non-profit US Public Interest Research Group says, and opt to make reservations directly with the airline rather than a third-party website. —Emma Tucker, CNN Money, 8 Nov. 2025

Other symptoms include sickness, blurred vision, headaches and difficulty walking. —Jack Beresford, MSNBC Newsweek, 8 Nov. 2025

Aldo Olivieri, il Gatto Magico (the Magic Cat), who had survived a fractured skull that required drilling to save his life and left him with chronic headaches, became the first-choice goalkeeper. —Literary Hub, 7 Nov. 2025

Tariff uncertainties in 2025 presented one big operating headache for shoe companies. —Vicki M. Young, Footwear News, 7 Nov. 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