[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
2. also [foraught] To the extent that. - Used like a negative with
For all I care, you can throw it away.
For all heknows,
we might be in Boston.
Compare: AS FAR AS(2), ONCE AND