Darth Vyrassu
Immortal Jen'ari Sith Emperor
Sith, or the Sith language, was the native language of the people of Ziost and Korriban. It was adopted as the mystical language of the Sith Order after the Dark Jedi Exiles enslaved the Sith species. Sith was an agglutinative language, in which words or even phrases were made up of linears sequences of distinct meaningful units. Despite the preeminence of the Galactic Basic Standard, the Sith language remained in use up until the post-Imperial period. To the Lost Tribe of Sith, an order founded on the remote planet Kesh, the Sith language was known as the Old Tongue.