Middle Primitive Elvish
gyer
root. *old, worn out (of things)
gyernā
adjective. old, worn, decrepit (of things)
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!
An unglossed root in The Etymologies of the 1930s with derivatives like ᴹQ. yerna “old, worn” and N. gern “worn, old (of things)” (Ety/GYER), and thus probably having a similar meaning.