for all

[for all] 1. In spite of; even with, despite. - Used for contrast.

For all his city ways, he is a country boy at heart.

There maybe mistakes occasionally, but for all that, it is the best book on thesubject.

For all his money, he was very unhappy.

2. also [foraught] To the extent that. - Used like a negative with "care" and"know".

For all I care, you can throw it away.

For all heknows, we might be in Boston.

Compare: AS FAR AS(2), ONCE AND FORALL.