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”, possibly a variant of edwen “second”.
Noldorin
thêl
noun. sister
thêl
noun. sister
muinthel
noun. sister
gwathel
noun. sister, associate
muinthel
noun. sister
adwen
noun. [unglossed]
borth
?. [unglossed]
clei
?. [unglossed]
coen
?. [unglossed]
diragas
?. [unglossed]
foeg
adjective. mean, poor, bad
mauth
?. [unglossed]
menwed
?. [unglossed]
nith
?. [unglossed]
nithrad
?. [unglossed]
níth
?. [unglossed]
porennin
?. [unglossed]
telwen
?. [unglossed]
A word for “sister” in The Etymologies of the 1930s derived from the root ᴹ√THEL or THELES of the same meaning, with an irregular plural thelei (Ety/THEL). It had a more elaborate form muinthel, the equivalent of muindor “(dear) brother”, with an initial element muin “dear”.
Neo-Quenya: In notes from the late 1960s, Tolkien introduced a new word nethel for “sister” from the root √NETH (VT47/14). However, I think thêl and related words might be retained to mean a “metaphorical sister”, a close female associate who may or may not be related by blood, as with such words as gwathel “[sworn] sister, associate”. In this paradigm, I would assume muinthel still refers to a sister by blood, with an added connotation of strong affection. I think it’s best to assume the irregular Noldorin plural pattern was reformed to the normal Sindarin plural thîl.