The Quenya word for “east”, cognate of S. rhûn (LotR/1123). In inflected or compounds forms, the final n was usually dropped as was generally the case with Quenya direction words, for example in the ablative from Rómello “from the East” (LotR/377). It was ultimately derived from the root √RŌ/ORO “rise” (PE17/63, Ety/RŌ). It originally meant “rising direction”, that is ro- + men, and was thus connected to the rising sun.
Conceptual Development: In the earliest Lost Tales the word for “East” was ᴱQ. oronto (LT1/85), a word that also appeared in the Qenya Lexicon from the 1910s, with the gloss “rising (of the sun)” (QL/70). On the same page Tolkien gave the word ᴱQ. óre “the dawn, Sunrise, East” (QL/70), so the connection between “East” and “sunrise” was a very early idea.
The word ᴹQ. rómen “east” appeared in The Etymologies from the 1930s along with N. rhûn, both derived from ᴹ√RŌ (Ety/RŌ). At the time, there were no problems with this equivalence, since [[n|initial [r] was unvoiced]] in Noldorin. Tolkien went on to use both these forms in The Lord of the Rings.
Unfortunately, Tolkien later abandoned the unvoicing of initial r in Sindarin, making these two forms problematic. Tolkien considered modifying the Sindarin form to rûn (PE17/88) or the Quenya form to hrómen (PE17/18). The latter was probably derived from an s-strengthened form of the root ᴹ√SRŌ (PE22/127), where the initial sr- would become voiceless [r] in both Quenya and Sindarin. Ultimately, though, he left both forms alone. Perhaps he decided the s-strengthening of the root was a Sindarin-only variant.
rómen, Rómen noun "east" (RŌ, MEN, SA:men), "uprising, sunrise, east" (SA:rómen); also name of tengwa #25 (Appendix E). Possessive form rómenwa (PE17:59).Variant hrómen, PE17:18. Rómenna, a place in the eastern part of Númenor, is simply the allative "eastward" (SA:rómen), cf. also rómenna in LR:47, 56. Ablative Rómello "from the East" or "[to one] from the East", hence Tolkien's translation "to those from the East" in his rendering of Namárië (Nam, RGEO:67, PE17:59; Romello with a short o in VT49:32). Masc. name Rómendacil "East-victor" (Appendix A; cf. Letters:425). Masc. name Rómestámo, Róme(n)star "East-helper" (PM:384, 391; probably ?Rómenstar must always become Rómestar, but Tolkien cited the form as Róme(n)star to indicate the connection with rómen "east")