acheronian

adj.dark and dismal as of the rivers Acheron and Styx in Hades

同义词：AcheronticStygian

1. The dungeon was filled with an acheronian gloom that chilled the soul.
   地牢中弥漫着一种令人心寒的阴森气氛。
2. Her voice had an acheronian quality, deep and foreboding.
   她的声音带有一种阴森的特质，深沉而令人不安。