( informal ) used to show that you refuse to do sth or do not know sth :
I'm damned if I'll apologize!
I'm damned if I know who he is.
( informal ) used to show that you refuse to do sth or do not know sth :
I'm damned if I'll apologize!
I'm damned if I know who he is.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005