( informal ) used to say that a person is not worried about or interested in what happens to sb/sth :
I could be dead for all he cares!
( informal ) used to say that a person is not worried about or interested in what happens to sb/sth :
I could be dead for all he cares!
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005