This is the standard Gondorian pronunciation (that is, the pronunciation that would have been used by the people who actually lived among the Emyn Arnen). Outside Gondor, the name would have been pronounced more like e'moon a'rnen.

The origins of the name Arnen are not completely clear; taken as Elvish, it can be translated as 'by the river', which makes sense given the location of these hills, but the fact that the name is not in the plural suggests that it did not originate with the hills themselves. It is said that older records in Gondor recorded Arnen as an ancient name for a large part of the land later called Ithilien, and in this sense the name Emyn Arnen could be approximately translated as 'Hills of Ithilien'.