Definition of "decadeslong" []

• Lasting for decades. (adjective)

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• "Adam Schiff, D-Calif., and Bob Goodlatte, R-Va., used their opening statements to a Senate impeachment panel to outline what they called a decadeslong pattern of unethical behavior by New Orleans-area U.S."
• "OSLO—The man who has admitted to twin attacks that killed at least 76 people in Norway is likely "insane" and convinced he is at the vanguard of a decadeslong cultural war, according to the lawyer representing him."
• "The talks represent the latest chapter in a decadeslong struggle as Myanmar's government has sought—and largely failed—to reach a lasting peace with the numerous ethnic minority groups that dominate large parts of the country, especially along Myanmar's borders with China and Thailand, where several ethnic groups maintain private militias and control swaths of territory."