A verb in Tolkien’s later writings glossed as either “to beget” (PE17/111) or “be begotten” (PE17/170), appearing in The Lord of the Rings as an element in the word nostar “parent” (LotR/981) and derived from the root √NŌ/ONO “beget, be born”. The word ᴱQ. nosta- dates all the way back to the Qenya Lexicon of the 1910s where it was glossed “give birth to; cause” under the early root ᴱ√NŌ “become, be born” (QL/66), but then vanished for several decades where it was either replaced by or in competition with Q. onta- “beget” (PE17/170; Ety/ONO).
Neo-Quenya: For purposes of Neo-Quenya, I would use this verb primarily in the sense “beget” = “give birth to”, as opposed to onta- “to beget” = “✱to conceive”. It might be used impersonally to have the sense “to be born”, as in nostane ni loar canquain né “[it] birthed me forty years ago = I was born forty years ago”.
An impersonal verb for “to dream” based on the root √OLO-S, so that presumably the putative subject would be in the dative: óla nin “[it] dreams to me = I dream”. This verb says something interesting about Elvish psychology, in that dreams are seen as things that happen to a dreamer rather than an action of the dreamer themselves. This may be related to the Elvish experience of receiving telepathic visions through dreams, from other Elves or from greater powers.
Conceptual Development: The Gnomish Lexicon of the 1910s has a verb G. oltha- that could likewise be used in an impersonal construction with the dative to mean “I dream” (GL/62).