not have the foggiest

idiom

used to say that a person has no knowledge about something
I haven't the foggiest idea what she's talking about.
"Where did I put my keys?" "I haven't the foggiest."

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Cite this Entry

“Not have the foggiest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/not%20have%20the%20foggiest. Accessed 22 Apr. 2024.

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