A verb in the Gnomish Lexicon of the 1910s glossed “go, depart, be over, finish, end, die” (GL/54). The early root ᴱ√lith- also seems to have been related to time (see G. laith “time, the course of time”), so the meaning of this verb may have originally been exclusively temporal, only later spatial.
Gnomish
fini(o)s
noun. larch
lith-
verb. to go, depart, be over, finish, end, die
carn
adjective. done, finished
telu-
verb. to close, end, finish
cartha-
verb. to finish, make
cranta-
verb. to finish, achieve, accomplish, complete
fodra-
verb. to bring to an end, end, finish; to come to an end, end, finish
telu
noun. end
A noun appearing as G. finis or finios “larch” in the Gnomish Lexicon of the 1910s (GL/35), likely a cognate to ᴱQ. fine “larch” from the contemporaneous Qenya Lexicon (QL/38). According to the editors, there was a cross mark near this and some other related words, possibly indicating their deletion.
Neo-Sindarin: Since ᴹQ. fine “larch” survived in Tolkien’s later writings, I would retain ᴺS. finios “larch” as well for purposes of Neo-Sindarin.