variants or less commonly decadelong
: lasting or occurring over a decade or about a decade
A decade-long drought in Saskatchewan and Alberta nesting areas has cut sharply into the number of birds migrating into Idaho …—Dan Knauss
The renegade gene that causes Huntington's disease has been found after a decade-long search …—Daniel Q. Haney

Examples of decade-long in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The decade-long political movement was, in part, fueled by the intense backlash over the mass closures of 50 schools in 2013, which took place almost entirely in Black and Latino neighborhoods. — Kate Armanini, Chicago Tribune, 8 Oct. 2026 The demonstrations showed how protests that began at a high school in the Paris region in mid-September have grown into a nationwide movement -- the latest of many that have marked Macron's nearly decade-long tenure. — Nicolas Garriga, Arkansas Online, 7 Oct. 2026 The demonstrations showed how protests that began at a high school in the Paris region in mid-September have grown into a nationwide movement — the latest of many that have marked Macron’s nearly decade-long tenure. — ABC News, 6 Oct. 2026 Patagonia is changing course on living wages after a decade-long effort failed to bring all workers in its supply chain up to its 2025 target. — Alexandra Harrell, Footwear News, 5 Oct. 2026 See All Example Sentences for decade-long

Word History

First Known Use

1974, in the meaning defined above

Time Traveler
The first known use of decade-long was in 1974

Browse Nearby Words

Cite this Entry

“Decade-long.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decade-long. Accessed 11 Oct. 2026.

Love words? Need even more definitions?

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

More from Merriam-Webster