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 may be mistakes occasionally, but for all that, it is the best book on the subject.

For all his money, he was very unhappy.

2. also for aught

To the extent that. — Used like a negative with "care" and "know".

For all I care, you can throw it away.

For all he knows, we might be in Boston.

Compare: AS FAR AS (2), ONCE AND FOR ALL.