môr

noun. night

A noun for “night” derived from primitive ᴹ✶mǭri (EtyAC/MOR), where the primitive [[ilk|[ǭ] became [ō]]].

dunn

adjective. black

A Doriathrin adjective meaning “black” (Ety/DUN). Its Noldorin and Danian cognates imply development from a primitive form ✱✶dunnā. Since the primitive form ended in [a], the Ilkorin a-affection would ordinarily have produced ✱✱donn. However, it seems that a-affection was prevented or reversed before [nn], as suggested by Helge Fauskanger (AL-Doriathrin/dunn).

ungol

noun. darkness

A noun for “darkness” developed from the root ᴹ√UÑG (Ety/UÑG), perhaps from a primitive form ✱✶uñglē̆ [uŋglē̆] as suggested by Helge Fauskanger (AL-Ilkorin/ungol): after the [[ilk|primitive final [e] was lost]], the resulting [[ilk|final [l] would become syllabic and develop into [-ol]]].