Meaning of “for all sb cares/knows” in the English Dictionary

british dictionary

"for all sb cares/knows" in British English

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for all sb cares/knows


said to show that something is not important to someone:

You could be the , for all I care - you're not coming in here without a ticket.

(Definition of “for all sb cares/knows” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)