@@@ perhaps a later, S-only, innovation
Primitive elvish
thol
root. stand up, top
tolu
verb. stand up
Sindarin
thol
sōl
thol-
verb. to roll
-eb
suffix. adjective suffix
-en
suffix. adjective suffix
-iel
suffix. adjective suffix
-in
suffix. adjective suffix
-ren
suffix. adjective suffix
Noldorin
-eb
suffix. adjective suffix
-en
suffix. adjective suffix
-iel
suffix. adjective suffix
-in
suffix. adjective suffix
-ren
suffix. adjective suffix
-rin
suffix. adjective suffix
-ui
suffix. adjective suffix
Telerin
-ya
suffix. adjective suffix
Quenya
-ya
suffix. adjective suffix
tolu-
verb. stand up, get up, leave one’s seat
pelta-
verb. to roll
A neologism for “to roll” coined by Helge Fauskanger in his NQNT (NQNT), a causative form of √PEL in its verbal sense “go round, encircle, revolve on fixed point”, hence originally “✱to make go round”.
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
Gnomish
thol-
verb. to roll
A verb in the Gnomish Lexicon of the 1910s appearing as G. thol- {“roll. tr. & intr.” >>} “roll” (GL/73). It could be based on some variant ✱ᴱ√ÞOL of the early root ᴱ√TOL+U from the contemporaneous Qenya Lexicon which had derivatives like ᴱQ. tolu- “roll up, furl” (QL/94).
Neo-Sindarin: Since we have no later words for “roll”, I would retain ᴺS. thol- “to roll” for purposes of Neo-Sindarin based on a (Sindarin-only) Neo-Root ✱√THOL. That conflicts from 1964 S. thôl “helmet” which is also derived from √THOL (PE17/188), but in 1957 Tolkien derived this helmet word from √STOL instead (PE17/186), leaving room for ᴺS. thol- “roll”.
-thol Reconstructed
suffix. adjective suffix
-(i)ol
suffix. adjective suffix
-(r)in
suffix. adjective suffix
-r(i)ol
suffix. adjective suffix
-ra
suffix. adjective suffix
-wed
suffix. adjective suffix
Early Noldorin
-ui
suffix. adjective suffix
Early Quenya
-noina
suffix. adjective suffix
-noite
suffix. adjective suffix
-se
suffix. adjective suffix
-voite
suffix. adjective suffix
-wa
suffix. adjective suffix
-ya
suffix. adjective suffix
Qenya
-voite
suffix. adjective suffix
-ya
suffix. adjective suffix
pl1. thely or thuil _n. _Q. sōl. >> castol