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 

kelulinde

noun. spring

A word for “spring” in the Declension of Nouns of the early 1930s, a combination of ᴹQ. kelu- “flow” and ᴹQ. linde “pool” (PE21/10). ᴱQ. kelusindi “river (near its source)” = ᴱQ. kelu- + sindi from the Qenya Lexicon of the 1910s is similar in structure (QL/46).