Qenya
yúya
both; both facts, both [pref.]; both facts
yuale
noun. twilight
yúkale
noun. twilight
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!
An adjectival form of ᴹQ. yúyo “both” appearing in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/106), also used as a pronoun for abstracts meaning “both facts” (105).
Neo-Quenya: In Tolkien’s later writings, yúyo was used as both an adjective and a pronoun, but I’d retain yúya as a prefixal form to preserve correlatives from DRC.