Sindarin is one of the major languages created by J.R.R. Tolkien for his Middle-earth legendarium. It is spoken by the Elves, particularly the Grey Elves, and is characterized by its rich phonetics and grammar, reflecting Tolkien's deep interest in linguistics. As a living language within Tolkien's works, Sindarin has a complex vocabulary and syntax, making it a favorite among fans and scholars. It is often used in the names of places and characters, such as Legolas and Rivendell, adding depth to the lore of The Lord of the Rings and The Silmarillion.