As no other word beginning in ph- is attested, it is assumed that a nasal mutation is triggered by the pronoun în.1 , hence the form observed in the "King's Letter"
Sindarin
ilu
noun. universe, the whole, cosmos
pân
adjective. all, in totality
pân
adjective. all, all, *complete, entire, full, the whole
@@@ extended meaning suggested on Discord 2022-03-11
illad
noun. everything
ilnad
pronoun. everything
menel
heaven
(i venel), pl. menil (i menil)
pân
all
(adj.) *pân, pl. pain (only attested in mutated pl. form phain, SD:128-31). Not to be confused with the noun pân ”plank”.
pân
all
pl. pain (only attested in mutated pl. form phain, SD:128-31). Not to be confused with the noun pân ”plank”.
A neologism coined by Paul Strack in 2021 specifically for Eldamo, the Sindarin equivalent of Q. ilu and Q. ilúvë as terms for the entire universe.