洸こう洋よう

noun

vast expanse of water; unfathomable; incoherent

Literary and archaic noun. Describes a boundless body of water, or metaphorically something deep, vast, and hard to grasp. The 'incoherent' sense is rare and may refer to rambling speech or writing.

• 古こ典てんでは「洸こう洋ようたる大たい海かい」のように使つかわれる。

  In classical texts, it is used like 'the vast, boundless ocean'.

• 彼かれの議ぎ論ろんは洸こう洋ようとして掴つかみどころがなかった。

  His argument was unfathomable and hard to pin down.