A hill in East Beleriand where Denethor died (S/122), translated “Lonely Hill” (LR/143, WJ/185). This name is a combination of amon “hill” and ereb “lonely” (SA/er, Ety/ERE).
Conceptual Development: In Silmarillion drafts from the 1930s, this hill was briefly named N. Amon Thoros (of unclear meaning), but this was changed to Amon Ereb, translated “Lonely Hill” (LR/56). The name also appeared in The Etymologies with the derivation given above (Ety/ERE).
amon (“hill, steep-sided mount”), ereb (“isolated, lonely”)