A root mentioned in passing in as a variant of ᴹ√KIL “divide” in The Etymologies of the 1930s, but it had no derivatives and appeared nowhere else (Ety/KIL).
Middle Primitive Elvish
tor
root. brother
torōmā
noun. [unglossed]
ṇ̃gwā̆le
noun. torture
ulda
noun. torrent, mountain stream
tārā
adjective. lofty
skil
root. [unglossed]
bay
root. [unglossed]
iw
root. [unglossed], [ᴱ√] *fish
us
root. [unglossed]
A root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/US).
phan
root. [unglossed]
A deleted root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/PHAN).
stin
root. [unglossed]
stā
root. [unglossed]
uruk
root. [unglossed]
A root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/URUK).
anga
root. iron
auluta-
verb. [unglossed]
kaltwa
?. [unglossed]
khlip
root. [unglossed]
An unglossed root in a rejected paragraph from the Quenya Verbal System of the 1940s (PE22/112 note #78).
kōmā
noun. [unglossed]
lak
root. swift
maiga
root. [unglossed]
An unglossed root appearing in the first version of Tengwesta Qenderinwa from the 1930s (TQ1) to illustrate certain patterns of root formation (PE18/66). It may have serving as the basis for ᴹQ. Maia, though this word was given different derivations later.
nayak
root. pain
tundu
noun. hole
tār(ō)
noun. king
tārī
noun. queen
ṇ̃kwalē
noun. death agony
Tolkien gave this root in The Etymologies of the 1930s as ᴹ√TOR “brother” with derivatives like ᴹQ. toron and N. tôr of the same meaning (Ety/TOR). Hints of the roots continued use appear in the 1959 term Q. melotorni “love-brothers” for close male friends (NM/20). In notes from the late 1960s, Tolkien gave Q. háno and S. hanar as the words for “brother”, both from the root √KHAN. Nevertheless, I think it is worth retaining ᴹ√TOR to represent more abstract notions of “brotherhood” for the purposes of Neo-Eldarin, for “metaphorical” brothers as opposed to Q. háno/S. hanar for brothers by blood.