decades-long
adjective
de·cades-long
ˈde-ˌkādz-ˌlȯŋ 
variants
or less commonly decadeslong
: lasting two or more decades : occurring over a period of two or more decades
… no discussion of wolf research would be complete without mention of this fascinating, decades-long study.—
Robert R. Ream
Robert R. ReamHis decades-long accumulation of books makes an eclectic mix …—Stephen Mihm
Stephen MihmExamples of decades-long in a Sentence
Recent Examples on the Web
In her decades-long career, Goodall used her experience and fame to raise awareness to the dwindling chimpanzee populations and also the perils of environmental destruction.
—Nick Caruso, TVLine, 1 Oct. 2025
But historian Tani Munz writes that American Adrian Wenner doubted Frisch’s theory itself, leading to a decades-long feud.
—Danny Robb, JSTOR Daily, 1 Oct. 2025
Court filings over the past three years have detailed the decades-long saga behind both investigations, describing how police were stifled repeatedly and left with nowhere to turn, until one woman living on the streets of Fairfield came forward with a tip that changed everything.
—Nate Gartrell, Mercury News, 29 Sep. 2025
Gomez and Swift have a decades-long history of supporting one another.
—Lauren Huff, Entertainment Weekly, 28 Sep. 2025
See All Example Sentences for decades-long
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Nick Caruso, TVLine, 1 Oct. 2025
But historian Tani Munz writes that American Adrian Wenner doubted Frisch’s theory itself, leading to a decades-long feud.
—Danny Robb, JSTOR Daily, 1 Oct. 2025
Court filings over the past three years have detailed the decades-long saga behind both investigations, describing how police were stifled repeatedly and left with nowhere to turn, until one woman living on the streets of Fairfield came forward with a tip that changed everything.
—Nate Gartrell, Mercury News, 29 Sep. 2025
Gomez and Swift have a decades-long history of supporting one another.
—Lauren Huff, Entertainment Weekly, 28 Sep. 2025
See All Example Sentences for decades-long
Cite this Entry
“Decades-long.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decades-long. Accessed 7 Oct. 2025.
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