for all (someone) cares
idiom
informal
—used to say that someone does not care at all about something
For all I care, he can leave today.
She could quit the whole thing, for all he cares.
Cite this Entry
“For all (someone) cares.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/for%20all%20%28someone%29%20cares. Accessed 6 May. 2025.
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