pl1. thinn n. Grey-Elf. Q. thinda, sinda. The form thinn is given with a dagger, indicating an archaic or poetical form.
Sindarin
thenn
thenna
thenn
adjective. short
thenn
Grey-Elf
then
adjective. short
thent
adjective. short
The most common Sindarin word for “short”. In The Etymologies of the 1930s it was N. thent “short” derived from ᴹ√STINTĀ of the same meaning where the e was the result of a-affection (Ety/STINTĀ). In 1957 Notes on Names (NN), it was thent < ✶stentā where it was contrasted with thenn “grey-elf” < ✶thindā (PE17/141).
In 1957 Quenya Notes (QN) Tolkien instead had thenn “short” < ✶stenna, but this was part of a (brief?) paradigm where medial nt did not become nn in Sindarin (PE17/185). As such thent could no longer be the basis for Ann-thennath “✱Long-shorts” (LotR/193), name of a form of Elvish verse from The Lord of the Rings, and thus a new etymology was required:
> Since nt &c. no longer are held to yield nn &c., the word for “short” should be ✶stenna √STEN- “cut short, limit, confine, cramp”. Q thenna/senna. S thenn, esten (PE17/185).
However, this word appeared again as thent in the name of another style of Elvish alliterative verse: Minlamad Thent “✱First-echoing Short” in the draft introduction to the tale Narn i Chîn Húrin (WJ/311).
Neo-Sindarin: Since I prefer to assume medial nt did become nn, I would use thent “short” for purposes of Neo-Sindarin.
thennon
noun. Grey-Elf
pl1. thennyn masc. n. Grey-Elf. Note the rule on the same page stating that the ending was "after n -or". >> -on
thennor
noun. Grey-Elf
pl1. thennyr masc. n. Grey-Elf.
Thend
Grey-Elf
pl2. thendrim, thennath n. #Grey-Elf. Tolkien notes that in the plural forms "The e is analogical from (rare) sg. thend" (PE17:141).
thend Archaic
noun. *Sinda, Grey-Elf
thennes
noun. Grey-Elf
fem. n. Grey-Elf. >> -es
thent
adjective. short
thenneth
noun. Grey-Elf
fem. n. Grey-Elf. >> -eth
thent
short
thent (pl. thint), also ?estent (pl. estint).
thent
short
(pl. thint), also ?estent (pl. estint).
esten
adjective. thenna
adj. Q. thenna, senna. >> thenn
estent
adjective. short
The word estent was a longer form of thent “short” < ✶stentā (PE17/141; WJ/311), where the initial s became syllabic and developed into es-. In one place it had a variant esten as part of a paradigm where the word for “short” was thenn (PE17/185); see the entry on S. thent for discussion.
esten
adjective. short
estent
adjective. (very?) short
The slash sign in minlamad thent/estent might indicate either variant forms of an adjective, or a sequence of two short verse units, possibly of alliterating half-lines, see Tolkien's Legendarium p. 122
mîth
noun. *Sinda, Grey-Elf
thind
Grey-Elf
pl2. thindrim n. #Grey-Elf.
thindeth
noun. Grey-Elf
fem. n. #Grey-Elf. >> -eth
thindon
noun. Grey-Elf
masc. n. #Grey-Elf. >> -on
thinedh
noun. Grey-Elf
{ð} fem. n. #Grey-Elf. >> -eth
thinidh
Grey-Elf
pl2. thinidhrim {ð} n. #Grey-Elf.
thinidhes
noun. Grey-Elf
{ð} fem. n. #Grey-Elf.
nuitha
stop short
(i nuitha, in nuithar) (prevent from coming to completion; stunt; not allow to continue) (WJ:413)
send
grey-elf
#send (i hend, o send, construct sen) _(probably a term only used by the Noldor, borrowed from Quenya Sinda)_, pl. sind (i sind), coll. pl. Sendrim.
thinnas
shortness
(also used for a “breve”, a mark indicating that a vowel is short). Verb
adj. Q. thenna, senna. >> esten