bereth is Sindarin for "queen, spouse" or "supreme, sublime".
From Primitive Quendian barathî.
The early Noldorin explains it comes from root BARATH.
It is unrelated to root BERÉTH ("beech, birch"). Also, it doesn't contain the feminine ending -eth.
- ↑ 1.0 1.1 J.R.R. Tolkien, "Words, Phrases and Passages in Various Tongues in The Lord of the Rings: Eldarin Roots and Stems", in Parma Eldalamberon XVII (edited by Christopher Gilson), p. 23
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Lost Road and Other Writings, Part Three: "The Etymologies", entry "BARATH-"