for all (someone) cares

idiom

Definition of for all (someone) cares

informal
used to say that someone does not care at all about somethingFor all I care, he can leave today.She could quit the whole thing, for all he cares.

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“For all (someone) cares.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/for%20all%20%28someone%29%20cares. Accessed 28 Oct. 2020.

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