YOU SAID:

If you don’t have anything nice to say don’t say anything

INTO JAPANESE

何も言いたいことがない場合は、何も言わないで

BACK INTO ENGLISH

If you have nothing to say, don't say anything.

INTO JAPANESE

何も言うことがない場合は、何も言わないでください。

BACK INTO ENGLISH

If you have nothing to say, don't say anything.