atarmë dative (?) pron. "for us" (VT44:18; Tolkien apparently considered dropping this curious form, which in another text was replaced by rá men, rámen; see rá #1)
Quenya
an
for
atarmë
for us
ana
to
ana (1) prep. "to" (VT49:35), "as preposition _ana _is used when purely _dative formula is required" (PE17:147), perhaps meaning that the preposition ana can be used instead of the dative ending -n (#1, q.v.) Also as prefix: ana- "to, towards" (NĀ1); an (q.v.) is used with this meaning in one source (PE17:127)_
ten
for
ten (2) conj. "for", in Fíriel's Song; apparently replaced by an in LotR-style Quenya.
véna
for us
véna pron. "for us", (long) dative form of ve # 2, q.v.
na
to, towards
na (2) prep. "to, towards", possibly obsoleted by #1 above; for clarity writers may use the synonym ana instead (NĀ1). Originally, Tolkien glossed na as "at, by, near"; the new meaning entered together with the synonyms an, ana (VT45:36).
-nna
to, at, upon
-nna "to, at, upon", allative ending, originating from -na "to" with fortified n, VT49:14. Attested in cilyanna, coraryanna, Endorenna, Elendilenna, númenórenna, parma-restalyanna, rénna, senna, tielyanna, q.v. If a noun ends in -n already, the ending -nna merges with it, as in Amanna, formenna, Elenna, númenna, rómenna as the allative forms of Aman, formen, elen, númen, rómen (q.v.). Plural -nnar in mannar, valannar, q.v.
-nna
to
-n (1) dative ending, originating as a reduced form of -nă "to", related to the allative ending -nna (VT49:14). Attested in nin, men, ten, enyalien, Erun, airefëan, tárin, yondon (q.v.) and also added to the English name Elaine (Elainen) in a book dedication to Elaine Griffiths (VT49:40). The longer dative ending -na is also attested in connection with some pronouns, such as sena, téna, véna (q.v.), also in the noun mariéna from márië "goodness" (PE17:59). Pl. -in (as in hínin, see hína), partitive pl. -lin, dual -nt (Plotz). The preposition ana (#1) is said to be used "when purely dative formula is required" (PE17:147), perhaps meaning that it can replace the dative ending, e.g. *ana Eru instead of Erun for "to God". In some of Tolkiens earlier material, the ending -n (or -en) expressed genitive rather than dative, but he later decided that the genitive ending was to be -o (cf. such a revision as Yénië Valinóren becoming Yénië Valinórëo, MR:200).
ngwin
for us
ngwin dative pronoun ?"for us" _(VT21:6-7, 10, VT44:36). _Apparently belonging to the 1st person pl. It would be pronounced *nwin* at the end of the Third Age, but since Tolkien in another source implies that the 1st pl. exclusive base ñwe had the "independent" stem we- in Quenya (VT48:10), we must assume that the dative pronoun should rather be wen**, or in Exilic Quenya *ven. The form ngwin may reflect another conceptual phase when Tolkien meant the nasal element of ñwe to be preserved in Quenya as well. The vowel i rather than e is difficult to account for if the base is to be (ñ)we. In VT49:55, Carl F. Hosttetter suggests that ngwen rather than ngwin may actually be the correct reading of Tolkiens manuscript.
an (1) _conj. and prep. _"for" (Nam, RGEO:66), an cé mo quernë… "for if one turned…" (VT49:8), also used adverbially in the formula an + a noun to express "one more" (of the thing concerned: an quetta "a word more", PE17:91). The an of the phrase es sorni heruion an! "the Eagles of the Lords are at hand" (SD:290) however seems to denote motion towards (the speaker): the Eagles are coming. Etym has an, ana "to, towards" (NĀ1). The phrase an i falmalī _(PE17:127) is not clearly translated but seems to be a paraphrase of the word falmalinnar "upon the foaming waves" (Nam)_, suggesting that an can be used as a paraphrase of the allative ending (and if falmalī is seen as a Book Quenya accusative form because of the long final vowel, this is evidence that an governs the accusative case). In the "Arctic" sentence, an is translated "until". Regarding an as used in Namárië, various sources indicate that it means an "moreover, further(more), to proceed" (VT49:18-19) or ("properly") "further, plus, in addition" (PE17:69, 90). According to one late source (ca. 1966 or later), an "is very frequently used after a full stop, when an account or description is confirmed after a pause. So in Galadriels Elvish lament […]: An sí Tintallë, etc. [= For now the Kindler, etc…] This is translated by me for, side an is (as here) often in fact used when the additional matter provides an explanation of or reason for what has already been said". Related is the use of an + noun to express "one more"; here an is presumably accented, something the word would not normally be when used as a conjunction or preposition.