曠こう古こ

noun, noun which may take the genitive case particle 'no'

historic; unprecedented

Literary term meaning something so rare or remarkable that it has no precedent in history. Often used in formal or written contexts to describe events, achievements, or discoveries.

• これは曠こう古この大だい発はっ見けんだ。

  This is an unprecedented great discovery.

• 曠こう古この偉い業ぎょうを成なし遂とげた。

  They achieved a historic feat.