An adjective translated as “mortal” appearing only in the proper name Firya “Mortal” used of Men in the Quendi and Eldar essay of 1959-60 (WJ/387). ᴹQ. firya was instead translated as “human” in The Etymologies of the 1930s where it was derived from the root ᴹ√PHIR (Ety/PHIR). I would use firya primarily in this second sense “human”, and for “mortal” would use Q. fírima (WJ/387).
Quenya
firya
proper name. Mortal
firya
adjective. mortal; human, [ᴹQ.] human; [Q.] mortal
Firya
mortals
Firya pl. Firyar noun "Mortals", an Elvish name of Mortal Men _(WJ:387). Etym has firya "human", literally *"mortal" (PHIR)_
Firyanor
firyanor
Firyanor place-name, other name of Hildórien, the place where mortal men first awoke, like the Elves did at Cuiviénen (PHIR)
Fírimo
mortal
#Fírimo noun "mortal", see fírima
fírima
mortal
fírima adj. "mortal" (PHIR; firima with a short i in VT46:4); also used as noun: Fírima pl. Fírimar "those apt to die", "mortals", an Elvish name of Mortal Men (WJ:387). This adj. is also the source of an explicit noun, personalized #Fírimo = mortal, mortal man. Pl. Fírimor (VT49:10-11), dative pl. fírimoin "for men" in Fíriel's Song; cf. also the pl. allative fírimonnar in VT44:35.
A shorter variant of Fírima (WJ/219, 387). It is the adjectival form of the root √PHIR produced by the suffix -ya.
Conceptual Development: In The Etymologies, the word ᴹQ. firya is glossed “human” and is derived from the same root ᴹ√PHIR (Ety/PHIR).