Gnomish
ruf-
verb. to tear
nien(n)
noun. tear
nîn
noun. tear
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!
A verb appearing as G. ruf- “tear” in the Gnomish Lexicon of the 1910s (GL/66), perhaps based on the early root ᴱ√RUVU “burst asunder” (QL/81).
Neo-Sindarin: Since I retain this early root as ᴺ√RUB, I would retain and update this early word as ᴺS. rov- “to tear” to better fit Sindarin phonology.