9. Russian
For someone Russian sound melodic and bad to the bone, but for others, it is very annoying because it sounds like the person speaking is aggressive. This is of course according to people on Reddit, but let me tell you – I studied Russian for a few years and I think Russian is amazing. I find out strong and aggressive (in a good way). I also think if it needs to be subtle and gentle, Russian can accommodate. I would argue that a part of why Russian novels are so amazing is that the language avails itself to intensity and drama. So there – some people like Russian, like I do, and others find it annoying.