An Adûnaic name for Morgoth, perhaps coined by Sauron when he introduced the worship of the dark god to the Númenóreans, translated as “Lord” (SD/376). It is derived from the word ârû “king” and was sometimes used in a compound together with Morgoth’s true Adûnaic name: Arûn-Mulkhêr (SD/367). In other writings (SD/357) it was the original Adûnaic name of Morgoth before he fell to evil, but that hardly makes sense in the conceptual scenario of the later Silmarillion, in which Morgoth had already become evil before men awoke.
arûnmasculine name. Lord
kherûmasculine name. Lord
A rejected draft version of the Adûnaic name for Morgoth translated “Lord”, replaced by Arûn of the same meaning (SD/376). It is transparently a derivative of the Elvish root ᴹ√KHER, as suggested by Carl Hostetter and Patrick Wynn (AAD/18). A later form of this word, *khôr “lord”, may appears as an element in the name Adûnakhôr “Lord of the West”.
* khôrnoun. lord
An element meaning “lord” appearing only in the name Adûnakhôr “Lord of the West”, though a similar form appears in the earlier names Kherû “Lord” and Mulkhêr “Lord of Darkness”. It isn’t clear whether this element is *akhôr or *khôr, but khôr resembles the Primitive Elvish root √KHER “rule, govern, possess”, to which it may be related.
This possible relationship has been suggested by various authors (AL/Adûnaic, EotAL/KHUR). Andreas Moehn rejected the relationship, pointing out that Primitive Elvish ✶khēru “lord” would have developed phonetically into Ad. **khîru (EotAL). However, khôr may be derived from some more ancient Avari loan word, which underwent different phonetic developments than those of the Eldarin languages, perhaps ✶kher- > khar > khaur > Ad. khôr.