We did use Boss in the past but it was just really unorcish being a straight english word. Chieftain wouldn't work cause of the same problem, and the Ward'r rank not actually being a chieftain role. Ward'r's role is to keep charge of the Grunts and make sure they fulfill their roles. I actually rather like the title Ward'r, because it is somthing as a clan we made ourselves. We have been looking to change the Warboss title to something better though.
I suggested to Burz that we change Me/Meeb to Gur (Svartiska) cause I felt it rather lazy that we can't say I but we just use Me instead. Although orcs should always make a habit of refering to themselves by their own names.