acherontic

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

同义词：AcheronianStygian

1. The cave had an acherontic atmosphere that made everyone uneasy.
   洞穴中有种阴森的氛围，让所有人感到不安。
2. The novel describes an acherontic landscape reminiscent of hell.
   小说描绘了一个让人联想到地狱的阴森景观。