A root in The Etymologies of the 1930s glossed “valiant”, its most notable derivative is the name S. Beren “Bold”. It had a variety of derivatives having to do with daring, such as ᴹQ. verya-/N. bertha- “to dare” and ᴹQ. verya/N. beren “bold”. The continued appearance of the name Beren in the later versions of The Silmarillion implies the root remained valid, but this name was only translated in The Etymologies of the 1930s, so it could have shifted in meaning.
Middle Primitive Elvish
tha
root. forward
thā
adverb. then, next
ta
root. that
thar
root. across, beyond
thar
root. stand
thausā
adjective. foul, evil-smelling, putrid
thaurēnā
adjective. *fenced
thārō
noun. saviour
i
root. that (deictic particle); [ᴱ√] here it is, root of relatives
tupsē
noun. thatch
ī
article. the
ber
root. valiant
narta
root. kindle
A root in The Etymologies of the 1930s glossed “kindle”, with derivatives ᴹQ. narta- and N. nartha- of the same meaning (EtyAC/NARTA). There is a mark above the final A that might be a partially formed macron (NARTĀ), so this “root” may just be an ordinary causative verb “✱make fire” = ᴹ√NAR + ᴹ✶-tā. The root was originally glossed “spear point, gore, triangle” with a derivative [N.] Narthas “gore”, a name that appeared in Lord of the Rings drafts but was eventually replaced by N./S. Naith “angle” (TI/244 note #50).
stal
root. steep
A root in The Etymologies of the 1930s glossed “steep” with derivatives like Ilk. thall “steep, falling steeply (of river)” and Ilk. thalos “torrent”, the latter used for the river name Ilk. Thalos (Ety/STAL). Tolkien continued to use the name S. Thalos in later versions of The Silmarillion, but the name was translated nowhere else, making its continued connection to the 1930s root uncertain.
stabnō
noun. carpenter, wright, builder
stabrō
noun. carpenter, wright, builder
stalga
adjective. stalwart, steady, firm
stalgondō
noun. hero, dauntless man
stalrā
adjective. steep, falling steeply (of river)
stangā
noun. throng, crowd, press
stankā
noun. cleft, split
star
root. stiff
phan
root. [unglossed]
A deleted root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/PHAN).
stā
root. [unglossed]
kalrondō
noun. hero
-asta
suffix. collective plural
auluta-
verb. [unglossed]
bay
root. [unglossed]
bel
root. strong
dēr
noun. man
epe
preposition. after
gor
noun. vigour
iw
root. [unglossed], [ᴱ√] *fish
kaltwa
?. [unglossed]
kanat
root. four
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).
kiryā
noun. ship
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.
mā
noun. land
rambā
noun. wall
skil
root. [unglossed]
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).
stangasyandō
proper name. throng-cleaver, throng-hewer
stin
root. [unglossed]
tal
root. foot
tanka
adjective. firm
torōmā
noun. [unglossed]
turumbē
noun. shield
turumā
noun. shield
tāl
noun. foot
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).
yatta
preposition. across
A root in The Etymologies of the 1930s glossed “that (deictic particle)” (Ety/I¹). A similar root appeared in the Qenya and Gnomish Lexicons of the 1910s glossed “here it is” (QL/41) and “root of relatives” (GL/50). Given Tolkien’s long standing use of i for both “the” and the relative pronoun “that” in all his Elvish languages, this root was established very early and remained more or less fixed throughout Tolkien’s life.