>>10695122Frisian is the most cloesly related languages in the world to English, followed jointly by German and Dutch, as it comes from the speakers of Old English that remained on the continent (or perhaps Old English comes from the Frisian speakers that left).
The sound is different in many ways between Frisian and English though, due to the French influences on English and the Dutch influences on Frisian.
https://www.youtube.com/watch?v=P6od3KMV9w8Whilst I can understand some words (and even some sentences) it is still clear they are very different.
The Dutch, genetically, are the most closely related mainlanders to the English, however.