史し上じょう空くう前ぜん

noun

unprecedented in history; epoch-making

A yojijukugo used to describe events, achievements, or phenomena that have never occurred before in recorded history. Often found in news, formal writing, and dramatic statements.

• これは史し上じょう空くう前ぜんの大だい発はっ見けんだ。

  This is an unprecedented discovery in history.

• 史し上じょう空くう前ぜんの規き模ぼでイベントが開かい催さいされた。

  The event was held on an unprecedented scale in history.