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

tauga

adjective. suitable, fitting, convenient

An adjective appearing as G. tauga in the Gnomish Lexicon of the 1910s, based on the verb G. tug- (GL/69) which had among its various meanings the senses “suit, fit, be convenient” (GL/71).

Neo-Sindarin: The verb tug- “suit” is no longer viable in later Sindarin, so I would replace this adjective with ᴺS. cammui “suitable, fitting, convenient” based on the (Neo-Sindarin) verb ᴺS. camma- “to make fit, suit, accommodate, adapt”.