Elven

Elven (also known as Elvish and sometimes referred to as the True Tongue by Tel'Quessir) is the language of the Tel'Quessir. Its script is known as Espruar, which is the alphabet of the Moon Elves. In current times, most Tel'Quessir across Faerun use it in messages or literature.

Seldruin was the language of Elven High Magic, written in the Hamarfae alphabet. It is now considered a dead language, and it is doubtful that anyone alive even knows how it was once pronounced.