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

gwass

noun. rush, rushing, noise of rushing, splash

A noun glossed “rush, rushing, noise of rushing, splash” from the Gnomish Lexicon of the 1910s (GL/44), clearly a derivative of the root ᴱ√GWASA (QL/103).

gwassiol

adjective. rushing, noisy, loud, rustling or splashing

An adjective glossed “rushing, noisy, loud, rustling or splashing” from the Gnomish Lexicon of the 1910s, an elaboration of its noun form G. gwass (GL/44).