A noun appearing as kaitȯile “rest” in the Qenya Lexicon of the 1910s, apparently derived from (deleted) ᴱQ. kaito- “lie quiet” (QL/46). The significance of the marked ȯ is not clear.
Early Quenya
rue
noun. rest, stillness, remaining, steadfastness
ruella
noun. village
kaitoile
noun. rest
masto
noun. village
wasto
noun. village
A noun appearing as ᴱQ. rue “rest, stillness, remaining, steadfastness” in the Qenya Lexicon of the 1910s under the early root ᴱ√RU’U, the noun form of ᴱQ. rua “steady, still, tranquil” (QL/80).
Neo-Quenya: For purposes of Neo-Quenya, I would retain ᴺQ. ruë derived from a Neo-Root ᴺ√RUH, but with a slightly revised meaning “stillness, ✱steadiness, tranquility” to be more compatible with its adjective.