alcarin adj. "glorious, brilliant" (shorter form of alcarinqua, q.v.) (PE17:24), hence Alcarin masc. name (or title) "the Glorious", title taken by Atanatar II of Gondor, also name of one of the Kings of Númenor (Appendix A).
Quenya
alcar
alkar
alcar
noun. glory, splendour, radiance, brilliance
alcarin
glorious, brilliant
alcarin
proper name. Glorious
Tar-Alcarin was the 17th ruler of Númenor (LotR/1035, UT/222). His name is simply the shortened form of alcarin(qua) “glorious”. Alcarin “Glorious” was also a sobriquet for Atanatar II, the 16th king of Gondor (LotR/1038, 1045).
alcarinquë
proper name. Glorious
A star (S/45) or possibly the planet Jupiter (MR/435). Its name is simply the noun form of the adjective alcarin(qua) “glorious”.
alcarin(qua)
adjective. glorious, brilliant, glorious, brilliant, [ᴹQ.] radiant
-inqua
glorious
-inqua adjectival ending, seen in alcarinqua "glorious" (WJ:412) from alcar "glory". Etymologically, -inqua means "-full", like "glory-full" in this case. A variant *-unqua is implied in WJ:415 (only referred to in archaic form -unkwā). "The forms using u were mainly applied to things heavy, clumsy, ugly or bad", whereas -inqua (in the same source derived from -inkwā) is neutral.
alcar (so spelt in CO, VT43:37-38, and VT44:32/34; otherwise "alkar")noun "glory, radiance, brilliance, splendour" (WJ:369, CO, VT43:37-38, VT47:13, AKLA-R; the latter source also lists an alternative longer form alcarë, also occurring in VT44:7/10) Compare Alcarin, Atanalcar.