YOU SAID:

if you dont have anything nice to say dont say it at all

INTO JAPANESE

いいことを言うことがないなら、まったく言わないでください

BACK INTO ENGLISH

If you have nothing nice to say, don't say it at all

INTO JAPANESE

言いたいことがないなら、何も言わないで

BACK INTO ENGLISH

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

INTO JAPANESE

何も言わないなら何も言わないで

BACK INTO ENGLISH

don't say anything don't say anything

INTO JAPANESE

何も言わないで 何も言わないで

BACK INTO ENGLISH

don't say anything don't say anything