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
His 1966 work Rosencrantz, which chronicled the plight of two minor players in Hamlet and their building confusion over the progression of events in the Bard's tragedy, kicked his decades-long theater career into high gear, winning him the Tony for Best Play.
—Jason Clark, Entertainment Weekly, 29 Nov. 2025
The decades-long mystery surrounding strange, unknown objects spotted throughout the skies has long remained under classification and shielded from the American public.
—Julia Bonavita, FOXNews.com, 27 Nov. 2025
Reflecting on his decades-long career, Morgan says the work feels even more meaningful now.
—Sarah Jones, PEOPLE, 27 Nov. 2025
Trump did not clarify if tests would be full-scale explosive ones breaking a decades-long moratorium and pointing to a reprise of the Cold War suspicions that had previously brought adversaries to the brink of World War Three.
—Brendan Cole, MSNBC Newsweek, 26 Nov. 2025
See All Example Sentences for decades-long
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Jason Clark, Entertainment Weekly, 29 Nov. 2025
The decades-long mystery surrounding strange, unknown objects spotted throughout the skies has long remained under classification and shielded from the American public.
—Julia Bonavita, FOXNews.com, 27 Nov. 2025
Reflecting on his decades-long career, Morgan says the work feels even more meaningful now.
—Sarah Jones, PEOPLE, 27 Nov. 2025
Trump did not clarify if tests would be full-scale explosive ones breaking a decades-long moratorium and pointing to a reprise of the Cold War suspicions that had previously brought adversaries to the brink of World War Three.
—Brendan Cole, MSNBC Newsweek, 26 Nov. 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 3 Dec. 2025.
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