史し上じょう最さい悪あく

noun which may take the genitive case particle 'no'

worst-ever; history's worst

Used attributively with の to describe something as the worst in recorded history or in a given context. Often appears in news and formal commentary.

• これは史し上じょう最さい悪あくの事じ故こだ。

  This is the worst accident in history.

• 今年ことしの夏なつは史し上じょう最さい悪あくの暑あつさだった。