事(こと)がない(something) has never occurred, to have never done (something), such a thing has not happened

Common

1. Expression, い-adjective

   1. 1.

      (something) has never occurred, to have never done (something), such a thing has not happened

      Usually written using kana alone, after the past tense form of a verb

   2. 2.

      never happens, there is never a time when

      Usually written using kana alone