Hi! I've recently come across the phrase "for all (someone) cares" and GPT told me it's a fixed English idiom. Is that right?

I know it's not meant literally. I've often heard it in TV shows and movies, but I never thought about it grammatically. I find its capability of producing an ironic meaning is interesting!

For example:
He can quit tomorrow, for all I care.
→ I really don't care if he quits tomorrow.

Question

Hi! I've recently come across the phrase "for all (someone) cares" and GPT told me it's a fixed English idiom. Is that right?

I know it's not meant literally. I've often heard it in TV shows and movies, but I never thought about it grammatically. I find its capability of producing an ironic meaning is interesting!

For example:
He can quit tomorrow, for all I care.
→ I really don't care if he quits tomorrow.

Answer

Hi Shana, 
It is an intriguing phrase. Sometimes a dismissive tone like "for all I care" can actually sound better than a simple negation or protest.

If the lottery winner isn’t serving the greater good, for all I care, let them pave their driveway with gold blocks.

لا تفوّت فرصة تعلّم لغة جديدة وأنت مرتاح في منزلك. تصفّح مجموعتنا المختارة من مدرّسي اللغات ذوي الخبرة وسجّل في درسك الأول الآن!