ye.tet is a proper name listed among the chiefs of Edom and Esau.

The supplied verses use the term as a proper name within lists of chiefs: one list identifies the chiefs of Esau, and the other lists chiefs of Edom after Hadad's death.

1. Proper name in chief lists · dominant

   The form is tagged as a proper noun in both occurrences. In Genesis 36:40 the APB renders a list of the chiefs of Esau, including “chief Jetheth”; in 1 Chronicles 1:51 it similarly renders the chiefs of Edom after Hadad died, including “chief Jetheth.”

   Genesis 36:401 Chronicles 1:51

In the Anselm Project Bible: Across both verses, the APB presents the name as “Jetheth” in a list introduced by “chief.” It does not independently establish more than the name's placement in these lists.