-ya (5) adjectival ending, as in the word Quenya "Elvish" itself; when added to a verbal stem it may derive a kind of short active participle, as in melumatya "honey-eating" (mat- "eat"), saucarya "evil-doing" (car- "do"). (PE17:68)
eldarinnoun/adjective. Elvish, Elvish (language), Elvish languages, of the Eldar
@@@ Helge Fauskanger suggested that Eldarinwa is an extended form of this word as an adjective (QQ/Eldarin). More exactly, I think it is the application of the possessive/adjectival suffix -va to the word Eldarin in its noun-sense = “Elvish language”.
quenyanoun. Elf-latin, Elvish, Elvish, High-elven, Elf-latin, †speech, High-elven, High-elven, Elvish, Quendian language
Eldarin adj. derived from Elda: "Eldarin, Elvish" (Silm, ÉLED). Also in the longer form Eldarinwa (pl. Eldarinwë in VT47:14, in the title Eldarinwë leperi ar notessi, "The Eldarin fingers and numerals")
lambelë noun "Language" (especially with reference to phonology), *"phonetics" (VT39:15)
#tengwië noun "language" in the compound mátengwië "language of the hands" (VT47:9). Compare tengwë, tengwesta.
Quendian, name of all Elf-tongues
tengwelë noun "Language" (in all its aspects), a general word for the grouping and composing of tengwi (linguistic "signs", phonemes) into a linguistic system (VT39:16)
Quenderinquendian, belonging to the elves as a whole
Quenderin adj."Quendian, belonging to the Elves as a whole" (a learned word) (WJ:407). The phrase quenderinwë coar "Elvish bodies" (PE17:175) presupposes a longer form *quenderinwa, here attested in the pl.
tengwestië noun "Language" as abstract or phenomenon (WJ:394)
lambënoun. language, language, tongue, dialect
* questanoun. language, speech, language