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 

kuv-

verb. to bow, to bow [the body]

A verb for “bow” based on the root ᴹ√KUB, appearing in the Quenya Verbal System from 1948 (PE22/102).