Sinn Feinism

• a word derived from Sinn Fein.
  Sinn Fein

  noun

  a political organization in Ireland, founded about 1905, advocating the complete political separation from Great Britain of a unified Ireland.

Sinn Féinism

• a word derived from Sinn Féin.
  Sinn Fein

  noun

  a political organization in Ireland, founded about 1905, advocating the complete political separation from Great Britain of a unified Ireland.

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