過か去こ最さい大だい

noun which may take the genitive case particle 'no'

largest ever; biggest on record; record-high

Used attributively with nouns to indicate the greatest scale, amount, or degree in recorded history. Common in news and formal contexts.

• 今年ことしの台たい風ふうは過か去こ最さい大だいの勢せい力りょくで接せっ近きんしている。

  This year's typhoon is approaching with the strongest force on record.

• 会かい社しゃは過か去こ最さい大だいの利り益えきを達たっ成せいした。

  The company achieved its largest-ever profit.