The Basque language is a language isolate unrelated to any other known language on Earth, predating the arrival of Indo-European languages in Europe by thousands of years.
Sources
- https://www.britannica.com/topic/Basque-language (britannica.com)
- https://www.langcen.cam.ac.uk/resources/langb/basque.html (langcen.cam.ac.uk)
- https://www.babbel.com/en/magazine/basque-language (babbel.com)
- https://artsandculture.google.com/story/the-basque-language-fundacion-antonio-de-nebrija/UgVhQPw0HwZkCw?hl=en (artsandculture.google.com)
- https://en.wikipedia.org/wiki/History_of_the_Basque_language (en.wikipedia.org)
- https://www.eke.eus/en/kultura/euskara-the-basque-language/history-of-euskara (eke.eus)
- https://www.iflscience.com/basque-the-miracle-of-europes-most-isolated-and-obscure-language-69368 (iflscience.com)