Nandorin is the language of the Silvan Elves, originally spoken in Mirkwood and Lórien but gradually displaced by Sindarin, though the Silvan Elves spoke this language with a distinct accent (LotR/1127 note #1). The Nandorin language was related to Sindarin, developing among the Telerin Elves who remained East of the Misty Mountains (PE17/60). A dialect of this language was spoken by the Green Elves of Beleriand (S/94). As such, it is conceptually related to Tolkien’s earlier Danian language from The Etymologies, but given the small number of attested words, it is difficult to deduce how similar the two languages were.