Eru divine name "the One" = God (VT43:32, VT44:16-17), "the One God" (Letters:387), a name reserved for the most solemn occasions (WJ:402). Often in the combination Eru Ilúvatar, "Eru Allfather" (cf. MR:112). Genitive Eruo (MR:329, VT43:28/32), dative Erun (VT44:32, 34). The adjectival form Eruva "divine" (Eruva lissëo "of divine grace", VT44:18) would be identical to the form appearing in the possessive case. Compound nouns: Eruhantalë "Thanksgiving to Eru", a Númenórean festival (UT:166, 436), Eruhin pl. Eruhíni "Children of Eru", Elves and Men (WJ:403; SA:híni, cf. _Eruhîn _in Letters:345), Eruion *"son of God" (or "God the Son"?) (VT44:16), Erukyermë "Prayer to Eru", a Númenórean festival (UT:166, 436), Erulaitalë "Praise of Eru", a Númenórean festival (UT:166, 436), Eruamillë "Mother of God" (in Tolkien's translation of the Hail Mary, VT43:32, see also VT44:7), Eruontari, Eruontarië other translations of "Mother (Begetter) of God" (VT44:7, 18), Erusén "the children of God" (RGEO:74; this is a strange form with no plural ending; contrast the synonym Eruhíni.) #Eruanna and #erulissë, various terms for "grace", literally "God-gift" and "God-sweetness", respectively (VT43:29; these words are attested in the genitive and instrumental case, respectively: Eruanno, erulissenen).
erunoun. God, The One, The One God, The One, God, The One, He that is Alone
Eruva, see Eru
Enuthe almighty creator who dwells without the world
Enu masc. name, "the Almighty Creator who dwells without the world" (LT2:343 - in Tolkien's later Quenya, the divine name appears as Eru instead)
nëaonce, at one time
nëa (1) "once, at one time" (in the past) (VT49:31). Also néya.
Aino noun "god", within Tolkien's mythos a synonym of Ainu (but since Aino is basically only a personalized form of aina "holy", hence "holy one", it could be used as a general word for "god") (PE15:72)
* ainonoun. god