The Dwarven Language, Kuzduul

There are only right now two cases of within adaptations of people knowing the dwarven tongue. Aragorn knows a little bit of it, or at least he knows swear words in it. Gimli says ish kakui, i durugnur, which is more or less a created for the movie's version of a spin upon your grave. And then this time we are now confirmed and doesn't surprise me at all that Elrond knows a bit of forevish. So Duren and Disa have a heated conversation about it, because obviously Disa is not happy with King Duren's decision. I'm going to refer to Duren's dad as King D