Earliest name of Methedras in Lord of the Rings drafts from the 1940s (TI/404), a combination of methen “final” and amon “hill”.
Noldorin
methen
adjective. end, final
methen
adjective. end, final
methen amon
place name. Methen Amon
meth
noun. end
meth
noun. end
tele
noun. end, rear, hindmost part
A word appearing in The Etymologies of the 1930s glossed “end, final” as an adjectival form of noun N. meth “end”, both under the root ᴹ√MET “end” (Ety/MET; EtyAC/MET).