name. Elves of the Darkness, (lit.) Dark Elves
Originally, this term was used for the Elves who never saw the light of the Two Trees of Valinor (S/51, WJ/361). Later, the term excluded the Sindar, and was more or less equivalent to Avari (WJ/373, SI/Moriquendi). It is a compound of morë (mori-) “darkness” and the plural of Quendë “Elf”.
Conceptual Development: The term ᴹQ. Moriqendi first appeared in Silmarillion drafts from the 1930s (LR/197). It also appeared in the Etymologies, with the same derivation as given above (Ety/MOR). In this earlier period, Tolkien also used the terms ᴹQ. Moreldar and ᴹQ. Morimor for “Dark-elves” (LR/197, 405; Ety/MOR).