かつてない

expression, i-adjective

unprecedented; never seen before

Used to describe something that has never happened or existed before; often modifies nouns like 出来事, 経験, or 状況.

See also: かつて

• これはかつてない大だい災さい害がいだ。

  This is an unprecedented catastrophe.

• 彼かれはかつてない成せい功こうを収おさめた。

  He achieved unprecedented success.