Synonyms of once and for all in English:

once and for all


See definition of once and for all

phrase

1‘you must decide once and for all’

SYNONYMS

conclusively, decisively, finally, positively, absolutely, determinedly, definitely, definitively, irrevocably

2‘he has gone once and for all’

SYNONYMS

for good, for always, forever, permanently, finally, in perpetuity

informal for keeps