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.
Sindarin
esten
adjective. short
esten
adjective. thenna
estent
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
thenn
thenna
adj. Q. thenna, senna. >> esten
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.
thent
short
thent (pl. thint), also ?estent (pl. estint).
thent
short
(pl. thint), also ?estent (pl. estint).
then
adjective. short
thenn
adjective. short
thent
adjective. short
nuitha
stop short
(i nuitha, in nuithar) (prevent from coming to completion; stunt; not allow to continue) (WJ:413)
thinnas
shortness
(also used for a “breve”, a mark indicating that a vowel is short). Verb
adj. Q. thenna, senna. >> thenn