unprecedented
前例のない、空前の、前代未聞の
一般例文
- unprecedented achievement
英字新聞からの例文
- 引用元 : New York Times (By Brian X. Chen) - The Biggest Tech Failures and Successes of 2017 (2017/12)
But this year’s hacking of Equifax, one of the three major consumer credit reporting agencies, was unprecedented.
