KhazOkan

Dwarfish is an ancient language, preserved against the vicissitudes of time and popular usage by the intense, institutional conservatism of dwarf society. Within each mountain hold, and many hill holds, formal offices exist with the sole, sworn and salaried duty of preventing the corruption of the ancient and revered language of the ancient and revered Sacred Ancestors of the dwarf lineage.
This results in a number of distinct linguistic features:

• Language is rarely considered distinct from its medium. KhazdarZpel (spoken dwarfish) and KhazdarKhrel (written dwarfish) are distinct concepts. Only the most rarefied of scholars ever discuss the concept of KhazOkan (literally, the dream of stone), a dwarfish language which encompasses both written and spoken forms, and the phonemic and graphemic elements from which they are created.
• New words are frowned upon as an erosion of the linguistic perfection of KhazOkan. Dwarfish therefore uses a lot of compound words, kennings and figurative language to describe things that have no traditional word.
• All forms of KhazOkan are highly formal, and vernacular language is frowned upon, and in holder society often actively suppressed.
• While on a micro-level, dwarf communities may develop slang, such terms never spread.
• Names are rarely recorded. Dwarf records are made in stone or metal and last forever, and a dwarf's personal name is too personal and precious to pass to anyone who reads it. Instead, dwarfs are referred to in official documents by short kennings. Dwarf families also use the kenning of a famous ancestor as family names.
  The same priesthood who arrange breeding partnerships keep personal names in their secret records.

Khazdarh - dwarfs (khaz → stone + darh → people)
aKhazdarh - dwarven, adj. (of the stone people)
KhazdarZpel - spoken dwarfish (Zpel → speech)
KhazdarKhrel - written dwarfish (Khrel → writing)
KhazOkan - dwarfish language (Okan → dream)
Khaz'Zpel - dwarvern glyphs ('stone speech', the pure compound KhaZpel is used specifically of the sacred forms of glyph and written language)