A word first appearing with the gloss “jewel, precious thing, treasure” in The Etymologies of the 1930s under the root ᴹ√MIR (Ety/MIR). It appeared regularly in Tolkien’s later writings with the same etymology and glosses like “gem”, “jewel” and “precious thing”, and it was a common element in names. In one place Tolkien said it could also be used as an adjective “precious” (PE17/165).
Quenya
mirwa
adjective. precious, valuable
mírë
noun/adjective. jewel, gem, precious thing, treasure; precious
maira
admirable, excellent, precious
maira adj. "admirable, excellent, precious"; "splendid, sublime" ("only of great, august or splendid things") (PE17:163, 172). Cf. Mairon.
mirwa
precious, valuable
mirwa adj. "precious, valuable" (PE17:37)
maira
adjective. admirable, excellent, precious, splendid, sublime
mírë
jewel
mírë noun "jewel" (MIR, SA:mîr), "a treasure, a precious thing" (PE17:37).Cf. Elemmírë; short form -mir in Tar-Atanamir (SA:mîr); see also Artamir.
mairon
masculine name. Admirable
The original name of Sauron before his corruption by Melkor (PE17/183). Even after his corruption, he still called himself Mairon or Tar-Mairon sometimes, at least until he lost his beautiful form after the fall of Númenor (PE17/183). This name seems to be a masculinized form of the adjective maira “admirable”.
melin
dear
melin adj. "dear" (MEL)
miruvor
mead
miruvor, full form miruvórë noun "mead", "a special wine or cordial"; possessive miruvóreva "of mead" (Nam, RGEO:66; WJ:399).In the "Qenya Lexicon", miruvórë was defined "nectar, drink of the Valar" (LT1:261).
sonda
dear, fond
[sonda adj. "dear, fond" (VT46:15)]
A word for “precious, valuable” in notes on the Words, Phrases and Passages from the Lord of the Rings based on the root √MIR “esteem, value” (PE17/37).