A name Tolkien considered as a replacement for Orodreth in some of his late writings from 1965 (PM/350). The name is a combination of arod “noble” and hîr “lord”. @@@ Etymology
Sindarin
Arothir
noun. Arothir
arothir
masculine name. Noble Lord
noble lord; arod (“noble”) + hîr (“lord”) S equivalent of Q Artaher.