-rim
suffix.
group plural
-lim
suffix.
group plural, group plural, [G.] many
rhim
noun.
cold pool or lake (in mountains)
rhim
noun.
crowd, host, great number
rhim
noun.
cold pool or lake (in mountains)
mithrim
place name.
*Mist Lake
-ath
suffix.
collective or group plural
gwî
noun.
net, web
helch
noun.
bitter cold
hoth
noun.
host, crowd, horde (nearly always in a bad sense)
lhae
noun.
great number
lhae
noun.
great number
lhoebelidh
proper name.
Green-elves
lhîn
noun.
pool
lhîn
noun.
pool
liniath
noun.
pools
nauglar
collective name.
Dwarves
oel
noun.
lake, pool, mere
ovra-
verb.
to abound
ovras
noun.
crowd, heap.
penedh
noun.
Elf
penn
noun.
Elf
rhimb
noun.
cold pool or lake (in mountains)
rhimb
noun.
crowd, host, great number
rhing
adjective.
cold
rhing
adjective.
cold
rhîf
noun.
edge, hem, border
sîdh
noun.
peace
sîdh
noun.
peace
ogod
Reconstructed
noun.
Ent
A noun in The Etymologies of the 1930s given as N. rhim “cold pool or lake (in mountains)” derived from the root ᴹ√RINGI “cold” (Ety/RINGI). This word is the final element of N. Mithrim “✱Grey Lake” in The Etymologies, but in later writings Tolkien explained this name differently, deriving the name from the Elves that lived around the lake, so it may have been abandoned.
Neo-Sindarin: If adapted to Neo-Sindarin, this word would be ᴺS. rim. Since √RINGI “cold” survived in later writings, this word may still be viable, though it would conflict with S. rim “host, a great number”.