His sharp tongue or Fëanor’s talent to insult.

Fëanor the Spirit of Fire was the most gifted of all the Elves in linguistic lore. He could use language so well that his speeches affected those who heard them and inspired them to do different, though not always sensible, things. Thus, being gifted with words and able to use them potently, Finwë’s eldest son was also exceptionally good at insulting others.  Read more

A curious incident of interdental consonants.

Languages are prone to changes. Influenced by many factors, they never stay the same but always evolve at all levels. J. R. R. Tolkien was well-known for creating his own languages which became more than just different words in his works. His invented languages actually worked within Arda and turned into one of the most important elements of the narrative.

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