• Go to LibreOffice's GitHub page .
  • Select the folder for the required language.
  • Select the file for the required hyphenation dictionary. Its name will be in the format hyph_xx_XX.dic, where xx_XX indicates the language's locale ID.
  • Depending on the file's size, you will see either a Raw or Download button. Hold and click the button to download the hyphenation dictionary.
  • If your browser appends an additional file extension, e.g. .txt, to the download's name, remove that extension so the filename ends with .dic.
  • In Finder, hold and select Go>Library .
  • Open the Spelling subfolder.
  • Create a subfolder and name it after the hyphenation dictionary's locale ID, i.e. where the dictionary's filename is in the format hyph_xx_XX.dic, the subfolder should be named xx_XX.
  • Place the hyphenation dictionary in the subfolder.
  • Quit and reopen Affinity Publisher.
  • In Affinity Publisher, select Edit > Preferences .
  • In the Preferences window, select Tools .
  • To the right of Additional dictionary folder , select Open .
  • Create a subfolder and name it after the hyphenation dictionary's locale ID, i.e. where the dictionary's filename is in the format hyph_xx_XX.dic, the subfolder should be named xx_XX.
  • Place the hyphenation dictionary in the subfolder.
  • Quit and reopen Affinity Publisher.
  • The newly installed dictionary is available in the Hyphenation pop-up menu in the Character panel's Language section.