An island mentioned in Lord of the Rings drafts from the 1940s as a remnant of sunken Taur-na-Fuin (TI/124), also appearing in draft maps (TI/301-2) but not in the published versions. Its name is a combination of toll “island” and fuin “night”.
Noldorin
fuin
noun. night, dead of night
fuin
noun. night, dead of night, gloom, darkness
fuin gorgoroth
place name. *Night of Deadly Fear
muin
adjective. secret
tol fuin
place name. Tol Fuin
gwathfuin-daidelos
place name. Deadly Nightshade
math-fuin-delos
place name. Deadly Nightshade
taur-na-fuin
place name. Forest of Night
Earlier name of S. Taur-nu-Fuin, this form of the name first appeared in The Lays of Beleriand (LB/34). Early in this period, Tolkien often translated this name as “Deadly Nightshade” (LB/34, SM/103, SM/299), but he eventually decided that this translation was actually a second name for the forest, whose Elvish form was N. Deldúwath.
In The Etymologies, Tolkien also posited that this name was a punning alteration of N. Dor-na-Thuin, the proper Noldorin form of Ilk. Dorthonion, the name of the region before it was corrupted by Morgoth (Ety/THŌN). When the Noldorin language became Sindarin, this development no longer made sense.
gwath
noun. shade
daw
noun. night-time, gloom
deldúwath
place name. Deadly Nightshade
doll
adjective. dark, dusky, obscure
dolt
adjective. dark, dusky, obscure
dúath
noun. darkness, shadow
dúath
noun. nightshade
dúwath
noun. darkness, shadow
dúwath
noun. nightshade
dûr
adjective. dark, sombre
dûr
adjective. dark
gwath
noun. shade, shadow, dim light
gwath
noun. stain
lhum
noun. shade
lhum
noun. shade
A word appearing as N. lhum “shade” in The Etymologies of the 1930s, derived from the root ᴹ√LUM, most notably an element in the name N. Hithlum (Ety/LUM). It was the cognate of ᴹQ. lumbe, and thus derived from primitive ✱lumbē, which explains why the final m survived as a reduction of mb.
Conceptual Development: The earliest iteration of this word was G. lôm {“pool, sl...” >>} “gloom, shade” from the Gnomish Lexicon of the 1910s, based on primitive ᴱ✶lou̯me (GL/54) and probably derived from the early root ᴱ√LOMO as suggested by Christopher Tolkien (LT1A/Hisilómë). In this early document, G. lum or glum was “a cloud” (GL/55), likely a derivative of ᴱ√LUVU for “✱dark weather” as also suggested by Christopher Tolkien (LT1A/Luvier). In Noldorin Word-lists of the 1920s Tolkien had ᴱN. {lom >>} lhom “shadow” (PE13/149). This became N. lhum “shade” in The Etymologies, as noted above.
Neo-Sindarin: In later writings, Hithlum was designated North Sindarin and its final element was based on a loan from Q. lómë “dusk”, with the m surviving only because it was from the North dialect (PE17/133; WJ/400). However, the root √LUM “shadow, darkness” also survived in later writings (PE17/168), so I think N. lhum “shade” can be salvaged, though if adapted to Neo-Sindarin it would need to become ᴺS. lum as suggested in HSD (HSD). Given the later use of Q. lumbo for “(dark) cloud”, I think the Gnomish sense G. lum “[dark] cloud” can be salvaged as well.
maur
noun. gloom
maur
noun. gloom
A noun in The Etymologies of the 1930s glossed “gloom” appearing under the root ᴹ√MOR (Ety/MOR). A nearby primitive form ᴹ✶mǭri is the likely basis for this word as suggested by Carl Hostetter and Patrick Wynne (EtyAC/MOR), where the primitive ǭ became au as was the usual sound change in both Noldorin and later Sindarin (PE18/46, 96).
môr
noun. darkness, dark, night
ogol < ogl
gloom
n/adj gloom, gloomy
thurin
adjective. secret, hidden
Another name for Taur-na-Fuin appearing in The Etymologies from the 1930s, a combination of fuin “night” and the name Gorgoroth “Deadly Fear” (Ety/ÑGOROTH).