Learn how to say Frisian correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word Frisian:
relating to Frisia or Friesland, its people, or language.
1a native or inhabitant of Frisia or Friesland.
2 [mass noun] the Germanic language of Frisia or Friesland, most closely related to English and Dutch, now with fewer than 400,000 speakers.