辛达林 (Sindarin) is a fictional language created by author J.R.R. Tolkien for his Middle-earth legendarium. It is one of the Elvish languages spoken by the Elves, particularly the Grey Elves or Sindar. The language is characterized by its rich phonetics and grammar, reflecting Tolkien's deep interest in linguistics. In the context of Tolkien's works,辛达林 is used in various texts, including The Lord of the Rings and The Silmarillion. It serves as a means of communication among Elvish characters and is often associated with themes of beauty and wisdom. The language has a complex vocabulary and is integral to the cultural identity of the Elves.