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
a decades-long career
… 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
This will be the last year the ceremony airs on CBS, ending a decades-long partnership as the show will move to Disney next year.
—Abid Rahman, HollywoodReporter, 29 Jan. 2026
While Saintremy’s suspension has sparked backlash, her situation underscores a deeper, decades-long pattern of instability at the Little Haiti Cultural Complex, according to former directors and community members in Little Haiti.
—Miami Herald, 28 Jan. 2026
Almost every gallery and store had wheelchair entry, retrofitted into eighteenth-century infrastructure in ways that would trigger decades-long preservation battles back in the UK.
—Sophie Morgan, Condé Nast Traveler, 28 Jan. 2026
This is in line with a decades-long trend of business processes working with increasingly sophisticated computation, with important differences.
—Bipul Sinha, Fortune, 27 Jan. 2026
See All Example Sentences for decades-long
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Abid Rahman, HollywoodReporter, 29 Jan. 2026
While Saintremy’s suspension has sparked backlash, her situation underscores a deeper, decades-long pattern of instability at the Little Haiti Cultural Complex, according to former directors and community members in Little Haiti.
—Miami Herald, 28 Jan. 2026
Almost every gallery and store had wheelchair entry, retrofitted into eighteenth-century infrastructure in ways that would trigger decades-long preservation battles back in the UK.
—Sophie Morgan, Condé Nast Traveler, 28 Jan. 2026
This is in line with a decades-long trend of business processes working with increasingly sophisticated computation, with important differences.
—Bipul Sinha, Fortune, 27 Jan. 2026
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 31 Jan. 2026.
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