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

labra

adjective. loose, lax; flapping; weak

An adjective in the Gnomish Lexicon of the 1910s glossed “loose, lax; flapping; weak” along with related verb G. laptha- “to relax, loosen” (GL/52), both probably based on the early root ᴱ√LAPA “enfold” (QL/51).