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!
rau
noun. lion
rausta-
verb. to hunt, chase, pursue (only in actual sense of following game)
raug
adjective. swift, rushing
raust
noun. hunt, chase
rautha-
verb. hunt, chase, pursue
graug
noun. demon
-iant(ha)
suffix. *superlative
-iont(ha)
suffix. *superlative
annor(in)
adjective. lofty
annuir
adjective. lofty
celebron
proper name. Moon
cub
adjective. hollow
dara
adjective. lofty
dâ
adjective. high
dûl
adjective. hollow
grôg
noun. demon
mandra
adjective. noble
rothrin
adjective. hollow
ruf-
verb. to tear
rân
noun. Moon
rûdin
adjective. hollow, cavernous
sinc
noun. metal
A noun from the Gnomish Lexicon of the 1910s appearing as G. sinc “metal” (GL/67), clearly the cognate of ᴱQ. sink “mineral, gem, metal” from the root ᴱ√SINI (QL/83).
Neo-Sindarin: I would retain this word for purposes of Neo-Sindarin, but would revise its sense to ᴺS. sinc “mineral”, derived from the primitive form ✶sinki (PE17/108) which may itself mean “✱mineral”; see that entry for discussion. I would use N. tinc for “metal”.
tam
noun. copper
taura
adjective. powerful
tum
noun. hollow
A word appearing as G. rausta- in the Gnomish Lexicon of the 1910s with the gloss “to hunt, chase, pursue (only in actual sense of following game)”, a verb form of G. raust “hunt, chase” (GL/65). Tolkien also had G. rautha- “hunt, chase, pursue” on the same page.
Neo-Sindarin: For purposes of Neo-Sindarin, I would revise these verbs to ᴺS. ruida- “to pursue, chase” based on the later root ᴹ√ROY “chase” and cognate to ᴹQ. roita- of similar meaning, but removing the sense “hunt” and its connection to game animals to make it more distinct from [N.] fara- “to hunt”. I’ve seen this Sindarin neologism proposed in several places, but I’m not sure who first coined it.