幽ゆう々ゆう

taru-adjective, adverb taking the 'to' particle

deep and dark; profoundly dark

A literary, somewhat archaic word describing a deep, quiet darkness, often with a sense of mystery or the supernatural. Used as a 'taru' adjective or adverb with と.

• 森もりの奥おくは幽ゆう々ゆうとした闇やみに包つつまれていた。

  The depths of the forest were wrapped in a deep, dark gloom.

• 幽ゆう々ゆうと続つづく地ち下か道どうを歩あるいた。

  I walked through the underground passage that stretched on darkly and endlessly.