6. The Hungarian Language
Unlike any of its neighbors, Hungarian isn’t part of the Indo-European language family. Instead, it forms a close relationship with the other Uralic languages, which include for instance Estonian and Finnish!
Uralic languages are not directly descended from any other language group and are therefore considered one of the world’s primary language families. Even between different Uralic tongues, differences can be huge.
This is why Hungarian is one language that is considered extremely difficult to learn for just about everyone.