A root in The Etymologies of the 1930s glossed “day” with various derivatives like ᴹQ. are, N. aur “day” and ᴹQ. arin “morning” (Ety/AR¹). In Tolkien’s later writings, the Quenya word for “day” became aurë (RC/727; S/190), and in 1957 Quenya Notes he devised a new etymology for these day-words from the root √UR “heat” as in ✶auri “heat, period of sun” (PE17/148). That opens the question whether the various 1930s Quenya “morning” words from ᴹ√AR remain valid, but many Neo-Quenya writers (including me) retain them since there aren’t really any good alternatives. They might be salvageable as derivatives of the later root √AS “warmth” (so that “day” = “hot” and “morning” = “warm”).
Middle Primitive Elvish
mor
root. *black, dark
morn-ʒoth
masculine name. morn-ʒoth
mǭri
noun. blackness, dark, night
morok
root. *bear
mori
adjective. black
morókō
noun. bear
morikwende
noun. Dark-elf
ar
root. day
doʒ
root. night
A root in The Etymologies of the 1930s glossed “night” that (along with ᴹ√DOM) was the basis for the ᴹQ. lóme/N. dû “night” (Ety/DOƷ). It replaced some rejected variants ᴹ√LOƷ and ᴹ√DAW (EtyAC/LOƷ). Many of the derivatives of ᴹ√DOƷ were later assigned to other roots: N. dûr “dark” became S. dûr “dark” < √NDU “under, down” in notes from the late 1950s or early 1960s (PE17/152) and ᴹQ. lóna “dark” became Q. lúna (PE17/22). There are no signs of ᴹQ. ló “night” and N. daw “night-time, gloom” in Tolkien’s later writing. Future derivations of Q. lómë/S. dû only mention the root √DOM (PE17/152; PE22/153) and thus ᴹ√DOƷ may have been abandoned.
In a message to the Elfling mailing list from July 2012 (Elfling/362.96), David Salo suggested there might be a later root ✱√DU serving as the basis for Q. lúna “dark” and Q. lúmë “darkness”, though the latter might instead be from √LUM. Such a root ✱√DU is not attested in Tolkien writings, but if it existed, it could be a later iteration of ᴹ√DOƷ. Another possible example of the root ✱√DU is primitive ✶durnŭ “dark of hue”.
kwenedē
noun. Elf
ala-
prefix. very
dōmilindē
noun. nightingale
gālæ
noun. light
kalat
noun. light
ari
noun. day
day
root. shadow
dēr
noun. man
kwen(ed)
root. Elf
k’lā
noun. light
mbarat
root. fate
nis
root. woman
nī
noun. woman
nī̆s
noun. woman
span
root. white
wahsē
noun. stain
A root in The Etymologies of the 1930s serving as the basis for “bear” words: ᴹQ. morko, N. brôg, and Ilk. broga (Ety/MORÓK), replacing rejected ᴹ√MOROG (EtyAC/LIS). The primitive form ✶morokō “bear” reappeared in the Common Eldarin: Noun Structure from the early 1950s, but Tolkien wrote an “X” above it (PE21/82 and note #55). In Tolkien’s later writings it may have been replaced by ✶grā “bear” which appeared in notes from the late 1960s, but in those notes Tolkien changed the gloss of ✶grā to “dog” (VT47/12, 35). This leaves ᴹ√MOROK as the best available root for “bear”.