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 

hyarmaite

adjective. lefthanded

A word for “lefthanded”, a combination of hyar[ya] “left” and maite “handed” (Ety/KHYAR).

Conceptual Development: The Qenya Lexicon of the 1910s had ᴱQ. malenka “left handed” as a combination of ᴱQ. “hand” and ᴱQ. lenka “slow, dull, stiff” (QL/52, 57), but this was before Tolkien decided the Elves were ambidextrous and equally skilled with both hands.