だい事件じけん
daijiken

Noun

1. major incident; major happening; big scandal

Antonym of 小事件
これは空前くうぜんだい事件じけんとして歴史れきしのこるでしょう。
korewa kūzenno daijikento shite rekishini nokorudeshō.
This will go down in history as the greatest event that has ever taken place.