A noun appearing as ᴱQ. pantie “unfolding, opening, revealing” in the Qenya Lexicon under the early root ᴱ√PṆTṆ “open, spread out, show” (QL/72).

Neo-Quenya: Since the root ᴹ√PAT was still associated with “open” in Tolkien’s later writings (Ety/PAT), I would retain ᴺQ. pantië “unfolding, opening” for purposes of Neo-Quenya as a gerund of the later verb ᴹQ. panta- “to unfurl, open”.