Quenya 

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)

aráto

champion, eminent man

aráto noun "champion, eminent man" (SA:ar(a) )

aráto

noun. champion, eminent man, noble, lord, king

Quenya [PE17/118; PE17/147; SA/ar(a)] Group: Eldamo. Published by

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)

arquen

noble

arquen noun "a noble" (WJ:372), "knight" (PE17:147)