A correlative appearing in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/109), a combination of ᴹQ. enya “that far away” and ᴹQ. -n(an) “time”.
Qenya
enya
adjective. middle, *central, middle
enya
adverb. at some distant time, that far away
enyan(an)
adverb. then, at some distant time
laqe[t]-
verb. [unglossed]
a
preposition. [unglossed]
alama
noun. [unglossed]
amaldume
noun. [unglossed]
anaristya
noun. [unglossed]
assa
pronoun. [unglossed]
asse
pronoun. [unglossed]
asso
pronoun. [unglossed]
engwa
?. [unglossed]
ente
pronoun. [unglossed]
ento
pronoun. [unglossed]
ereáma
?. [unglossed]
es
[unglossed]
hyelma
?. [unglossed]
kaltua
?. [unglossed]
kanda
noun. [unglossed]
karpalimaite
noun. [unglossed]
lau(w)e
?. [unglossed]
mahtya
?. [unglossed]
mai(y)a
noun. [unglossed]
maldo
noun. [unglossed]
nandakka-
verb. [unglossed]
nerno
?. [unglossed]
niule
?. [unglossed]
olta-
verb. [unglossed]
parma
noun. book
rampa
?. [unglossed]
sahte
noun. [unglossed]
sarya
noun. [unglossed]
sisíria-
verb. [unglossed]
séra
?. [unglossed]
sóla
?. [unglossed]
tante
noun. [unglossed]
tatalta-
verb. [unglossed]
teuka
?. [unglossed]
thar- Archaic
verb. [unglossed]
timpana
noun. [unglossed]
toina
adjective. [unglossed]
toróma
noun. [unglossed]
tyue
noun. [unglossed]
varinye
noun. [unglossed]
yelme
noun. [unglossed]
éma
?. [unglossed]
An adjective for “middle” in The Etymologies of the 1930s derived from ᴹ✶endya under the root ᴹ√ÉNED “centre” (Ety/ÉNED).
Neo-Quenya: For purposes of Neo-Quenya, I would instead use this word for “✱central” similar to the gloss of later entya. For “middle” I would use the later adjective Q. endëa.