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!
arya
noun. day (twelve hours)
aryandor
place name. Aryandor
aryante
feminine name. Day-bringer
harya-
verb. to possess
ai(a)na
alien, strange, any other, of another sort, other; anything else, some other matter, a different matter
aiane
pronoun. anybody (thing, one) else; someone else, another
The correlative combinations ᴹQ. aiane or aine “anybody (thing, one) else; someone else, another” appeared Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/103 and note #42), both proniminal forms of ᴹQ. aia- “other”. These replaced various rejected forms: {arane, are} >> {warane, ware} >> {astane, asse, anasse} >> aiane, aine.
Neo-Quenya: For purposes of Neo-Quenya I would use ᴺQ. hyaquen for “someone else, another”, Q. hya “other” and quén “person”.
A female name (possible a variant of Árien) appearing in The Etymologies from the 1930s as compound of arya “day” and ante “giver (f.)” (Ety/ANA¹, AR¹).