A root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/US).
Middle Primitive Elvish
os
root. round, about
ot/otos/otok
root. seven
us
root. [unglossed]
khlip
root. [unglossed]
An unglossed root in a rejected paragraph from the Quenya Verbal System (QVS) written in 1948 (PE22/112 note #78).
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).
uruk
root. [unglossed]
A root in The Etymologies of the 1930s with no glosses or derivatives and no clear function (EtyAC/URUK).
auluta-
verb. [unglossed]
kaltwa
?. [unglossed]
torōmā
noun. [unglossed]
bay
root. [unglossed]
iw
root. [unglossed], [ᴱ√] *fish
kōmā
noun. [unglossed]
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).
stin
root. [unglossed]
stā
root. [unglossed]
kor
root. round
-owo
suffix. masculine suffix
mbarat
root. fate
A root in The Etymologies of the 1930s glossed “round, about”, with various derivatives like N. o “about, concerning” and ᴹQ. osto/N. ost “city, town with wall round” (Ety/OS). Tolkien also considered variant forms ᴹ√OD and ᴹ√OTH, the latter glossed “fort” (EtyAC/OS). This root in The Etymologies is a later iteration of unglossed ᴱ√OSO [’OSO] from the Qenya Lexicon of the 1910s with derivatives like ᴱQ. ossa “wall and moat” and ᴱQ. ostar “township” (QL/71). It also had derivatives in the contemporaneous Gnomish Lexicon such as G. ost “enclosure, yard; town” and G. osta- “to surround with walls, build up; fortify, protect” (GL/63). This early root probably meant something like “✱enclosure”.
In the Quendi and Eldar essay from 1959-60, Q. osto and S. ost were instead derived from the root √SOT “shelter, protect, defend”, but this root has no other derivatives.
Neo-Eldarin: For purposes of Neo-Eldarin, ᴹ√OS “round, about” is too useful to discard, and I prefer it over the later root √SOT, though √(O)S-OT might be salvaged as an extension of √OS.