What language does Japanese Kabuki theater use?

Aristocratic Language: A Connection to the Past

If you've ever attended a Kabuki performance, you might have found it difficult to understand some lines, even as a native speaker of modern Japanese. That is because the language used in Kabuki often resembles aristocratic language, which was deemed suitable for the nobles in society. This historical language, called "kogo" or "onorific language," is now considered archaic. However, it provides Japanese Kabuki with a timeless connection to the past and highlights the importance of tradition in this art form.