From Longman Dictionary of Contemporary Englishthat is not to saythat is not to sayTRUEused to make sure the person you are talking to does not think something that is not true I’m quite happy in my job but that’s not to say I’m going to do it for the rest of my life. → say
Examples from the Corpus
that is not to say• But that is not to say he does not feel afraid.• I have authorised his scheme, but that is not to say it will ever come about.• But that isn't to say that doing research is like breathing - you do it all the time without realising.• It does not exclude anything; but that is not to say that it can attain everything.• However, that isn't to say that male writers have it easy.• But that is not to say that Sierra Leone is not worth saving. 