From Longman Dictionary of Contemporary Englishit’s all or nothingit’s all or nothingused to say that unless something is done completely, it is not acceptable Half-heartedness won’t do – it’s got to be all or nothing. → all
Examples from the Corpus
it’s all or nothing• The deal is all or nothing.• It's all or nothing and being strong enough to take the flak if things go wrong.• It's all or nothing with her. 