再三再四 (さいさんさいし) Japanese meaning | Kotomora彼は再三再四同じ注意をした。
He gave the same warning repeatedly.
Usage patterns
再三再四〈動詞〉to do something over and over, insistently
He was warned again and again, but he never changed his attitude.
再三再四にわたって〈動詞〉to do something repeatedly over a span of time
Negotiations took place over and over again, but no conclusion was reached.