The proper word for first in Sindarin was minui
Sindarin
erin
?. on the ... day
erin
preposition. on the
erui
adjective. single, alone
erui
adjective. first (incorrect use by the Gondorians)
The proper word for first in Sindarin was minui
erui
single
erui (first, alone). No distinct pl. form. 3) minai (distinct, unique), lenited vinai; pl. mini
erui
single
(first, alone). No distinct pl. form. 3) minai (distinct, unique), lenited vinai; pl. mini**
or
on
(prep.) 1) or (above), with article erin ”on the” (followed by ”mixed mutation” according to David Salos reconstructions). Erin represents archaic örin. 2)
or
on
(above), with article erin ”on the” (followed by ”mixed mutation” according to David Salo’s reconstructions). Erin represents archaic örin.
bo
preposition. on
er
adjective. single
minai
adjective. single, distinct, unique
dartha
remain
dartha- (i dhartha, i narthar) (stay, wait, last, endure) (VT45:8)
dartha
remain
(i dhartha, i narthar) (stay, wait, last, endure) (VT45:8)
er
single
1) er (pl. ir) (VT48:6), 2)
er
single
(pl. ir) (VT48:6)
po
on
po (lenited bo) (VT44:23)
po
on
(lenited bo) (VT44:23)
Carl Hostetter suggested (VT31/26) that this form is some derivative of the root ᴹ√AR “day” while David Salo suggested it is a prepositional form combining [N.] or “above” with the definite article, perhaps with the sense “[up]on the”. Neither explanation seems especially compelling, but I can’t think of a better one.