Definition of who cares
informal
—used to stress that something is not important He can't carry a tune, but who cares? He's having fun and that's what matters.Who cares what she says? We'll do it our way.
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“Who cares.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/who%20cares. Accessed 20 Oct. 2021.
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