"Durin, Durin!" said Thorin. "He was the father of the fathers of the eldest race of Dwarves, the Longbeards, and my first ancestor: I am his heir."
(From: The Hobbit by J.R.R. Tolkien, Chapter III A Short Rest p. 69)
The word of the day could possibly help you. Although I'm far from an expert at Khuzdul, if you know this one word, at least you will be able to acknowledge his royal status:
|Image courtesy of www.thehobbit.com|
You'll be fine! ;-)