YOU SAID:

I'm so sorry for my son's behavior.

INTO JAPANESE

息子の行動に申し訳ありません。

BACK INTO ENGLISH

I'm sorry for my son's behavior.

INTO JAPANESE

息子の行動でごめんなさい。

BACK INTO ENGLISH

I apologize for my son's behavior.

INTO JAPANESE

甥の代わりに謝罪します

BACK INTO ENGLISH

I apologize for my nephew's behavior.

INTO JAPANESE

甥の代わりに謝罪します

BACK INTO ENGLISH

I apologize for my nephew's behavior.