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
tul
root. come, approach, move towards (point of speaker)
tulkathŏ
masculine name. Tulkathŏ
tuluk
root. *support, prop; steady, firm
tultā-
verb. make come
tulyā-
verb. to send hither
tulku
noun. support, prop
tulukmē
noun. support, prop
tul-
verb. come, am coming, have come, am arrived, am here
tyulussē
noun. poplar-tree
skil
root. [unglossed]
auluta-
verb. [unglossed]
bay
root. [unglossed]
bel
root. strong
iw
root. [unglossed], [ᴱ√] *fish
kaltwa
?. [unglossed]
khe
pronoun. they
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]
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.
phan
root. [unglossed]
A deleted root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/PHAN).
smal
root. yellow
smalinā
adjective. yellow
stin
root. [unglossed]
stā
root. [unglossed]
tanka
adjective. firm
tankāta-
verb. to make firm
torōmā
noun. [unglossed]
uruk
root. [unglossed]
A root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/URUK).
us
root. [unglossed]
A root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/US).
An unglossed root in The Etymologies of the 1930s with derivatives like ᴹQ. tulka “firm, strong, immoveable, steadfast”, N. tolog “stalwart, trusty”, and ᴹQ. tulko/N. tulu “support, prop” (Ety/TULUK). The “steady, firm” senses of the 1930s root are consistent with derivatives of the earlier root ᴱ√TULUK from the Qenya Lexicon of the 1910s with derivatives like ᴱQ. tulka- “fix, stick in, set up, establish”, G. tulga- “make firm, confirm, settle, steady; comfort” and ᴱQ. tulunka/G. tulug “steady, firm” (QL/95; GL/71); nearby ᴱ√TḶKḶ (with no derivatives) may also have been related (QL/93).
However, the Qenya Lexicon of the 1910s had a distinct root ᴱ√TḶPḶ with derivatives like ᴱQ. talpa/G. talp “support, prop”, ᴱQ. tulpu-/G. talpa- “prop up”, and G. clib- “uphold, support” (QL/93; GL/26, 69). This ᴱ√TḶPḶ may have been related to ᴱ√TULU as presented in the Qenya Lexicon, which in this document had the more ancient sense “uphold, support” (QL/95). Thus I think the 1930s derivatives of ᴹ√TULUK having to do with “support” may have been transferred from 1910s ᴱ√TḶPḶ.