Sindarin 

Arodreth

noun. 'Noble endurance'

prop. n. 'Noble endurance'. >> arod, reth

Sindarin [(PE17 Sindarin Corpus) PE17:182] < ? + REÞ, RES 'remain in same place', be unmoved, patient. Group: Parma Eldalamberon 17 Sindarin Corpus. Published by

arodreth

proper name. Noble Endurance

A Sindarin name from a list of Sindarin words from around 1959 (PE17/182). It is a compound of either arod “noble” and reth- “endure”, hence “Noble Endurance”.