headachy

adjective

head·​achy ˈhed-ˌā-kē How to pronounce headachy (audio)
variants or less commonly headachey
-er/-est
1
: having headache
2
: causing headache or attended by headache

Word History

First Known Use

1795, in the meaning defined at sense 1

Time Traveler
The first known use of headachy was in 1795

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

  1. Expanded definitions
  2. Detailed etymologies
  3. Advanced search tools
  4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Browse Nearby Words

Cite this Entry

“Headachy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/headachy. Accessed 25 Dec. 2025.

Love words? Need even more definitions?

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