The word was changed to bereth in the Etymologies, but was never changed in the texts (cf. Mereth Aderthad and the compound Merethrond)
Noldorin
bereth
noun. feast, festival
bereth
noun. queen
bereth
noun. queen, spouse
berethil
feminine name. Berethil
mereth
noun. feast, festival
brethil
noun. beech
brethel
noun. beech
berithil
masculine name. Berithil
brethel
noun. beech, beech-tree, silver birch
fêr
noun. beech-tree
meren
adjective. festive, gay, joyous
The word was changed to beren in the Etymologies, but meren would be restored together with mereth
rhîs
noun. queen
rhîs
noun. queen
A Noldorin name for Varda appearing on in The Etymologies from the 1930s (Ety/BARATH), possibly replacing older N. Bredhil and G. Bridhil and possibly replaced by N. Elbereth. It developed from ON. Barathi(l).