過か去こ最さい悪あく

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

record low; worst ever

Used to describe the worst level or value in recorded history, often in news or reports about statistics, performance, or conditions.

• 今年ことしの夏なつは過か去こ最さい悪あくの暑あつさだった。

  This summer was the hottest on record.

• その企き業ぎょうの業ぎょう績せきは過か去こ最さい悪あくを記き録ろくした。

  The company's performance hit a record low.