Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
anar
noun. Sun
en kárielto eldain isil, hildin úr-anar; toi írimar
for Elves they made the Moon, but for Men the red Sun; which are beautiful
úrin
proper name. Sun, (lit.) Fiery
onar(yas)
adverb. on one and the same day
The correlatives ᴹQ. onar or onaryas appeared in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/100, 109), a combination of ᴹQ. on- “same” and ᴹQ. -ar(yas) “days”.
Neo-Quenya: For purposes of Neo-Quenya I would update this to ᴺQ. imaurë “on the same day” using im- “same” and aurë “day”.
ye
conjunction. and
yo
conjunction. and
yu
conjunction. and
An earlier Quenya name for the Sun appearing in Silmarillion drafts from the 1930s and glossed “Fiery” (LR/240). It was sometimes used in combination with its other name Anar: Úr-anar “Red Sun” (LR/72). In a deleted entry in The Etymologies, it was given as a derivative of the root ᴹ√UR “be hot” (Ety/UR).