but what

phrase

: that … not
used to indicate possibility or uncertainty
I don't know but what I will go.

Examples of but what in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That is not new, but what may be new today is the way that employees need or look for emotional support at work, especially in the face of anxieties about AI, economic uncertainty, and social and political polarization. Holly Corbett, Forbes.com, 1 July 2026 Because, after all, as in all of Haber’s novels, the point is not really what is happening in the world but what is happening in the mind—in this case the mind of the pettiest of tyrants. Literary Hub, Literary Hub, 1 July 2026 Debt doesn't just disappear because the person who owed it has died, but what about the interest charges? Angelica Leicht, CBS News, 1 July 2026

Word History

First Known Use

1545, in the meaning defined above

Time Traveler
The first known use of but what was in 1545

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Cite this Entry

“But what.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/but%20what. Accessed 5 Jul. 2026.

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