An untranslated word appearing in notes on The Feanorian Alphabet from the late 1940s or early 1950s (PE23/26). It might be a later iteration of G. adhwen “approach, avenue” from the 1910s, or is perhaps related to S. adu and ᴹQ. atwa “double”.
Noldorin
thar-
prefix. across, athwart, over, beyond
har-
verb. to stand
thar
preposition/prefix. across, beyond
tharbad
place name. (?Crossway)
thargelion
place name. Land beyond Gelion
iath
preposition. across
adwen
noun. [unglossed]
ath-
prefix. on both sides, across
borth
?. [unglossed]
clei
?. [unglossed]
coen
?. [unglossed]
diragas
?. [unglossed]
mauth
?. [unglossed]
menwed
?. [unglossed]
nith
?. [unglossed]
nithrad
?. [unglossed]
níth
?. [unglossed]
porennin
?. [unglossed]
telwen
?. [unglossed]
A verb appearing as har “stand” on the back of one version of Thror’s Map from the 1930s (AotH/56). It might be related to ᴹQ. thar- “stand” from 1948 (PE22/126).
Neo-Sindarin: Since the later Elvish root for “stand” is √TAR, I would update this verb to ᴺS. tar- as suggested by Elaran.