Quenya 

mórë

blackness, dark, night, darkness

mórë noun "blackness, dark, night, darkness" (MOR, MC:214), also given with a short vowel:morë "dark, darkness" (Letters:282). If this is the initial element of Morinehtar "Darkness-slayer" (PM:384, 385), it would seem to have the stem-form mori-, though mori- is normally the adjective "dark, black" (see below).

mori

night

mori noun "night" (LT1:261, in Tolkien's later Quenya mórë, morë)

Fui

night

Fui noun "Night" (PHUY) - variant Hui, which form is probably to be preferred in light of Tolkien's later insight that the related word fuinë (see below) is actually Telerin, the proper Quenya form being huinë.

Hui

night

Hui noun "Night" (PHUY), in earlier "Qenya" defined as "evening" _(MC:214) or"fog, dark, murk, night" (LT1:253)._

ló

night, a night

ló (1) noun "night, a night" (DO3/DŌ, VT45:28)

olo

night

?olo (reading uncertain), possibly a synonym of ló #1, hence noun "night" (VT45:28)

Sindarin 

morn

night

(i vorn) (darkness), pl. myrn (i myrn). Note: the word is also used as an adjective ”dark, black” (Letters:386).

dû

night

_ n. _night (when viewed favourably). Q. lóme.

Sindarin [(PE17 Sindarin Corpus) PE17:152] < _dōmē _< DOM. Group: Parma Eldalamberon 17 Sindarin Corpus. Published by

fuin

noun. night, dead of night, gloom, darkness

Sindarin [Ety/354, Ety/382, S/431] Group: SINDICT. Published by

daw

nighttime

(i dhaw) (gloom), pl. doe (i noe), coll. pl. ?dawath or ?doath.

dúath

nightshade

(i dhúath) (dark shadow), pl. dúaith (i núaith).

dû

night

1) dû (i dhû) (nightfall, dusk, late evening, darkness), pl. dui (i nui) (SD:302), 2) morn (i vorn) (darkness), pl. myrn (i myrn). Note: the word is also used as an adjective ”dark, black” (Letters:386).

dû

night

(i dhû) (nightfall, dusk, late evening, darkness), pl. dui (i nui) (SD:302)

fuin

night, nightshade, dead of night

(gloom, darkness). No distinct pl. form.

tinnu

early night without a moon

(i dinnu, o thinnu) (dusk, twilight), pl. tinny (i thynny) if there is a pl.

Noldorin 

daw

noun. night-time, gloom

Noldorin [Ety/354] Group: SINDICT. Published by

fuin

noun. night, dead of night, gloom, darkness

Noldorin [Ety/354, Ety/382, S/431] Group: SINDICT. Published by

Adûnaic

dulgu

adjective. black, dark

An adjective translated “black” (SD/247). It appears in its plural form dulgî “black” in the final version of the Lament of Akallabêth (SD/247) and in its singular form dulgu in the second draft of this text (SD/312). It may be related to S. dûr “dark” and N. doll “obscure, hidden, dusky”, as suggested by Carl Hostetter and Patrick Wynn (AAD/14). It is likely related to or a variant of dolgu “black, dark”.

Adûnaic [SD/247; SD/312] Group: Eldamo. Published by

Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Qenya 

more

adjective. black, dark

móre

noun. blackness, dark, night

hui

proper name. Night

A name for (Primordial?) Night appearing in The Etymologies from the 1930s as a derivative of the root ᴹ√PHUY, along with its (archaic?) variant Fui (Ety/PHUY).

Conceptual Development: This name is most likely a remnant of the name ᴱQ. Fui from the earliest Lost Tales, where it was another name for the goddess ᴱQ. Nienna (LT1/66, LT1A/Fui). According to the Qenya and Gnomish Lexicons from the 1910s, this earlier version of the name is derived from the root ᴱ√ǶUẎU (GL/36, QL/38).

núre

noun. night

Early Quenya

móre

noun/adjective. night, darkness; black, dark

Early Quenya [LT1A/Mornië; MC/214; MC/221; PE16/060; PE16/062; PE16/064; PE16/072; PE16/074; PE16/076; PE16/077; PME/063; QL/062] Group: Eldamo. Published by

móri

noun. night

fui

noun. night

Doriathrin

môr

noun. night

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

Doriathrin [Ety/MOR] Group: Eldamo. Published by

Middle Primitive Elvish

mǭri

noun. blackness, dark, night

Middle Primitive Elvish [EtyAC/MOR] Group: Eldamo. Published by

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’s 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”.

Middle Primitive Elvish [Ety/DOƷ; Ety/DOMO; Ety/DYEL; Ety/LUM; Ety/MAK; Ety/MOR; Ety/NDŪ; Ety/SLIG; Ety/UÑG; EtyAC/LOƷ; EtyAC/UÑG] Group: Eldamo. Published by

Early Noldorin

morn

adjective. black, dark

Early Noldorin [PE13/150] Group: Eldamo. Published by

fuin

noun. night

Early Noldorin [PE13/143; PE13/156; SM/026] Group: Eldamo. Published by

Gnomish

fui

noun. night

Gnomish [GL/36; LT1A/Fui; LT1A/Tarn Fui; LT1A/Turuhalmë; QL/041] Group: Eldamo. Published by