A Noldorin name for Nessa appearing in The Etymologies from the 1930s, it is simply dineth “bride” used as a name (Ety/Nι, NETH, EtyAC/NDIS).
Noldorin
dineth
noun. bride
dineth
feminine name. Nessa
dineth
noun. bride
neth
feminine name. Nessa
dîs
noun. bride
dîs
noun. bride
A word for “bride” in The Etymologies of the 1930s derived from primitive ᴹ✶ndīse under the root ᴹ√NDIS (Ety/NDIS). Ordinarily the s in this word would have been lost, but it was influenced by N. †dess “young woman” < ON. ndissa from the same root (EtyAC/NDIS). Dîs “bride” in turn influenced the form of N. †dî “woman”, originally ON. nī < ᴹ√NĪ (Ety/DER, Nι; EtyAC/NDIS).
Neo-Sindarin: While I think this word is perfectly serviceable, for purposes of Neo-Sindarin it may be better to use the longer and more distinctive word dineth for bride.
A noun in The Etymologies of the 1930s glossed “bride”, a combination of N. †dî “woman, bride” and N. neth “young” (Ety/Nι; EtyAC/NDIS, NIS).