Dragontongue

Draconic (mislabeled as such)

Was the original language of both dragons and wyverns thousands of years ago before the language eventually split.

Curving letters (similar to Vietnamese) that show throat movements as sound.

Dragontongue is a much older language than the more modern Draconic (like Hebrew to Yiddish), only spoken either in extremely formal situations or in very traditional/high-class households.

Super formal i.e. reserved for speaking with heads of state, royalty, or people with massive egos

Gutteral, very low in the throat and chest. Hard consonant sounds like German and Russian, emphasizing -guh and -ck sounds.

There is a formal and casual tense, intended for speaking to those of higher or lower stations. Words can be created on the fly due to the structure of the language being based entirely on sounds instead of specific characters or nouns (like how we English speakers create new words all the time and a joke can suddenly become part of our lexicon).

Similar to Arabic numbers in that they are written with multiple angles, but they are different in shape (4 is written like a box)