Fae language

Fae is used to refer to the language(s) spoken by almost all fae everywhere: language change is so slow among the fae that one could call all the many dialects one language still. However, even the fae usually distinguish the Old Tongue - the archaic language found in ancient records and still used in oaths - from the Young Tongue, Fae as spoken today.

The Old Tongue was the language of the fae Golden Age, before the Time of Troubles, though it was used for scholarly purposes long after that time, and to a limited extent still is, not unlike Latin on Earth.

(In game terms, the Old Tongue and Young Tongue are separate languages with 4 points of similarity. All modern Fae as spoken in the Twilit Worlds is considered to be dialects on the Young Tongue. It's conceivable there may be fae somewhere long separated from those of the Twilit Worlds, but even they would speak a language of 4, or at worst 3, points of similarity. On a character sheet, "Fae" without further specifications will be assumed to refer to the Undermoon dialect of the Young Tongue. Though the language has changed slowly, writing systems have changed more, so Old Tongue texts generally take Decipherment to read unless one has bought the Old Tongue explicitly.)

Because the fae realms are powerful politically, culturally and economically, and because Fae changes so slowly, Fae has become the lingua franca of the Twilit Worlds and even some beyond. The Old Tongue was known as a language of scholarship in Atlantis, and several ancient texts known to human magicians are written in it. To this day, some magicians will use the language to write notes they wish to be able to be decipherable by magicians of any country or era, and any good magic library should contain a dictionary and grammar.

(In game terms, those with access to such a library and Decipherment skill should have no penalty to the roll for the Old Tongue.)