The word muindor is more usual
Noldorin
eithel
noun. issue of water, spring, well
i
article. the
i
definite article. the
falas
noun. the western coast of Beleriand
forodwaith
noun. the lands of the North
forodweith
noun. the lands of the North
hent
noun. the two eyes (referring to one person's eyes)
ho
pronoun. he
ho
pronoun. he
hon
pronoun. he
hon(o)
pronoun. he
hono
pronoun. he
tôr
noun. brother
tôr
noun. brother
dîr
noun. man, referring to an adult male (elf, mortal, or of any other speaking race)
gwador
noun. brother (especially used of those not brothers by blood, but sworn brothers or associates)
muindor
noun. brother
muindor
noun. brother
ell
noun. sky
An element meaning “sky” in several names from The Etymologies of the 1930s: N. Elfaron “Sky-hunter” (Ety/SPAR) and N. Elthoron “Eagle of the Sky” (Ety/THOR). It was derived from the root ᴹ√ƷEL “sky” which had an Old Noldorin form: ON. elle (Ety/ƷEL). However, Tolkien said “In Noldorin and Telerin this is confused with EL star”, implying that the word was not used in modern language; an earlier but rejected version of this entry had archaic N. †ell, el “sky” (EtyAC/ƷEL).
Neo-Sindarin: Despite the above statements, ell is probably the best attested option for “sky” in Neo-Sindarin, and I would use it as such, since it is in fact distinct from S. êl “star”, a word that is itself archaic/poetic versus more common S. gil.
gem
adjective. sickly
An adjective for “sickly” in The Etymologies of the 1930s from the root ᴹ√GENG-WA “sick” (Ety/GENG-WĀ), where the ancient cluster ngw became mb as usual in Noldorin and Sindarin.
ereg
place name. First
harad
noun. south
ardh
noun. realm
athan
preposition. beyond
edhen
adjective. first
ereg
adjective. first
forod
noun. north
forven
noun. north
ha
pronoun. it
harn
noun. helmet
harthad
noun. hope
min
cardinal. one
mû
interjection. no
al-
prefix. no, not
amrûn
noun. east, orient
ardh
noun. realm, region
benn
noun. man, male
celw
noun. spring, source
dae
noun. shadow
daew
noun. shadow
ethuil
noun. spring
falas
noun. beach, wave-beaten shore, line of surf
faur
noun. beach, shore
fern
noun/adjective. dead (of mortals)
fern
noun/adjective. dead person
flaew
adjective. sickly, sick, ill
foeg
adjective. mean, poor, bad
forod
noun. north
forodrim
noun. Northmen
forodwaith
noun. Northmen
forodweith
noun. Northmen
forven
noun. north
gem
adjective. sickly
gemb
adjective. sickly
ha
pronoun. it
hana
pronoun. it
hana
pronoun. it
harad
noun. south
harn
noun. helmet
hên
noun. eye
i
definite article. who
min
fraction. one (first of a series)
mân
noun. departed spirit
rhufen
noun. east
rhûn
noun. east
thlaew
adjective. sickly, sick, ill
thloew
adjective. sickly, sick, ill
An (archaic) word for “brother” in The Etymologies of the 1930s derived from the root ᴹ√TOR of the same meaning, with an irregular plural terein (Ety/TOR). In ordinary speech, it was replaced by muindor, with an initial element muin “dear”.
Neo-Sindarin: In notes from the late 1960s, Tolkien introduced a new word hanar for “brother” (VT47/14). However, I think †tôr and related words might be retained to mean a “metaphorical brother”, a close male associate who may or may not be related by blood, as with such words as gwador “(sworn) brother, associate”. In this paradigm, I would assume muindor still refers to a brother by blood, with an added connotation of strong affection.