once for all

kesinlikle, (ilk ve) son olarak, tamamıyla, bir çırpıda.
They had to be defeated once and for all.
I tell you once and for all that this must be done.

English-Turkish translations from the Atalay Dictionary, First Edition

once and for all

kesinlikle, kesin olarak, ilk ve son defa, son olarak.
The case was settled once and for all when

the appeal was denied: Yargıtayca reddedildikten sonra dava kesinlikle kapandı.

once and for all

kesinlikle, (ilk ve) son olarak, tamamıyla, bir çırpıda.
They had to be defeated once and for all.

I tell you once and for all that this must be done.

English-Turkish phrases from Zargan's own database

English-Turkish