quén (quen-, as in pl. queni; as final element in compounds -quen) noun "one, (some)body, person, individual, man or woman", pl. queni = "persons", "(some) people", "they" with the most general meaning (as in "they [= people in general] say that..."). The element is combined with noun and adjective stems in old compounds to denote habitual occupations or functions, or to describe those having some notable (permanent) quality; examples include roquen, ciryaquen, arquen, q.v. Also in aiquen "whoever", ilquen "everybody" (WJ:361 cf. 360, 372).
Quenya
arquen
noble
arquen
noun. noble, knight
arquen andamacilwa
Knight of the Long Sword
quén
one, (some)body, person, individual, man or woman
Ara-
noble
Ara-, ar- a prefixed form of the stem Ara- "noble" (PM:344). In the masc. names Aracáno "high chieftain", mothername (amilessë, q.v.) of Fingolfin (PM:360, cf. 344), Arafinwë "Finarfin" (MR:230)
arato
noble
arato noun "a noble" (PE17:147), in PE17:118 given as aratō and there glossed "lord" (often = "king"). Cf. aráto. The form cited in the latter source, aratō with a long final vowel, is evidently very archaic (compare Enderō under Ender); later the vowel would become short. (PE17:118)
er
one, alone
er cardinal "one, alone" (ERE, VT48:6, VT49:54), in an early source also adv. "only, but, still" (LT1:269); Eru er "one God" (VT44:17; er was here emended by Tolkien from erëa, which seems to be an adjectival form *"one, single".)
erëa
cardinal. one
erëa adj.? "one" or *"single", apparently an adjectival form (see er) (VT44:17)
min
cardinal. one
min numeral "one", also minë (VT45:34, VT48:6)
minë
cardinal. one
minë numeral "one", also min (MINI, VT45:34)
mir
cardinal. one
mir (2) cardinal "one" (LT1:260; in LotR-style Quenya rather minë)
mo
one, someone, anyone
mo, indefinite pronoun "one, someone, anyone" (VT42:34, VT49:19, 20, 26)
a
cardinal. one
min
cardinal. one, one, [ᴱQ.] one (in a series), the first; [adverb] first
The Quenya word for “one” used when counting: min, atta, neldë, etc. This is contrasted with er “one, alone” for an isolated thing (VT48/6).
Conceptual Development: This use of min “one” appeared regularly in Tolkien’s writings, dating back to the Early Qenya Grammar (EQG) of the 1920s (PE14/49, 82, 84), but there were occasional variations. The Qenya Lexicon of the 1910s instead had ᴱQ. mir “one” (QL/61), and The Etymologies of the 1930s had a variant form mine derived from the root ᴹ√MINI “stand alone, stick out” (Ety/MINI).
Neo-Quenya: For purposes of Neo-Quenya, I would also use min adverbially to mean “first”, as in carnes sa min “he/she did it first”, either before anyone else did so, or before he/she did anything else. Tolkien use min this way in the Early Qenya Grammar of the 1920s. See [ᴱQ.] minyallumë “firstly” for further discussion. For adjectival or pronominal “first” I would use minya.
arquen noun "a noble" (WJ:372), "knight" (PE17:147)