Resposta curta - sim.
Vou citar o artigo de Tolkien Estate sobre seus idiomas inventados:
Just as Tolkien’s Legendarium underwent decades of development and change both before and after the publication of The Lord of the Rings, Tolkien’s languages also underwent decades of elaboration, reconsideration, revision, and recapitulation throughout his lifetime. And also just as with the Legendarium, he never completed the languages; nor did he regard finality or fixedness in his languages as either necessary or even desirable goals. Nearly every occasion upon which Tolkien set to writing about or in one of his invented languages resulted in new invention, reconsideration, and change in the languages as they were then and previously conceived. Not even publication imposed fixedness on the languages, as shown by the changes Tolkien made to various Elvish texts in the second, revised edition of The Lord of the Rings, and by his own later reinterpretations of those texts in light of the conceptual alterations that arose in the languages after their publication.
O J.R.R. A Enciclopédia de Tolkien também declara que Tolkien continuou a desenvolver e mudar seu léxico élfico em versões sucessivas ao longo de sua vida, de acordo com mudanças em sua estética linquística. Origem
Alguns exemplos são mencionados aqui: link como a palavra "Vala" que inicialmente significa "um feliz um "mas depois mudou para" Power "ou" Deus ".
Em relação ao Senhor dos Anéis , a sua escrita serviu realmente como um catalisador para revisitar e fazer mudanças e acréscimos ao léxico élfico, dada toda a riqueza de detalhes e história concernentes ao Segundo e Terceiro. Idades que este livro introduziu.