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!

Qenya 

tunga

adjective. taut, tight; resonant (of strings)

An adjective in The Etymologies of the 1930s glossed “taut, tight (of strings, resonant)” derived from ᴹ✶tungā under the root ᴹ√TUG having to do with strength (Ety/TUG).

Conceptual Development: Early Qenya word-lists of the 1910s has ᴱQ. tunga “thick, dense”, but its relationship to other roots and words from this period is unclear (PE16/145).