orco ("k") noun "Orc", pl. orcor or orqui (WJ:390, ÓROK; pl. Orcor also in WJ:12, MR:74, 194). If the pl. form orqui is preferred, the word should be assigned the stem-form orcu-. Early "Qenya" has orc ("k") (orqu-) ("q") "monster, demon" (LT1:264; in LotR-style Quenya, no word can end in -rc.)
Quenya
orco
noun. Orc
orco
orc
urco
orc
urco ("k"), stem *urcu- and pl. urqui, noun: an old word used in the lore of the Blessed Realm for anything that caused fear to the Elves during the March; by the Exiled Noldor the word was recognized as the cognate of Sindarin orch and used to mean "Orc". The Sindarin-influenced form orco was also used. (WJ:390)
mehtar
noun. warrior
ohtar
noun. warrior
mahtar
warrior
mahtar noun "warrior" (MAK; original gloss "swordsman", VT45:32)
mordo
warrior, hero
mordo (2) noun "warrior, hero" (LT1:268 - probably obsoleted by # 1 above)
ohtacáro
warrior
[ohtacáro] ("k")noun "warrior" (KAR). In the Etymologies as printed in LR, the accent of the word ohtacáro was omitted (VT45:19).
ohtar
warrior, soldier
ohtar noun "warrior, soldier" (UT:282)
ohtar
masculine name. Warrior
pahta
speech
pahta (2) noun "speech", i.e. language (PE17:126); accompanied by the intransitive verb pakta- "speak, talk", which would be *pahta- in Quenya, of which the transitive equivalent is quet-, q.v. The intransitive verb "speak" is also given as carpa-, q.v.
pahta
noun. speech
quenya
speech
quenya noun (original adj.) "speech" (PM:399); the language-name Quenya is said to mean properly "language, speech" (WJ:393); cf. the phrase coirëa quenya "living speech" (PM:399).However, Quenya (archaic Quendya, still so in Vanyarin) is also interpreted "Elvish" (Letters:176), sc. the adjective corresponding to Quendi (WJ:374), but it was no longer used as a general adjective. Quenya lambë"Quenya tongue" (WJ:407). The command queta Quenya! "speak Quenya!" was used in the sense of "speak precisely and intelligibly, put into actual words" (instead of using hand signs or looks); the word Quenya is here used adverbially (PE17:138). The variant queta quenyā (PE17:137) appears to use the distinct accusative (formed by lengthening a final vowel) known from "Book Quenya".
This word was adapted from its Sindarin cognate orch, since the Noldor did not encounter orcs until they returned to Middle-earth (WJ/390). There are two attested plurals for this word, orqui and orcor. One possible scenario is that the word was at first treated as a u-stem noun by analogy with urco (urcu-), but later as the two words were disassociated, the declension of orco was regularized and treated as an ordinary vocalic noun.
This is the theory followed here, so that orcor is considered the regular plural and orqui archaic, probably active only in the First Age. If you use the orqui plural, you should also treat this as a u-stem noun (orcu-). @@@