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what's what

phrase

: the true state of things
knows what's what when it comes to fashion

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what's up with that
what's what
what's with
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“What's what.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/what%27s%20what. Accessed 14 Dec. 2025.

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Last Updated: - Definition revised
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