have no idea

phrase

: to not know or understand

I have no idea what you're talking about.

—used to reply to someone as an emphatic "yes"

"Was it hard?" "You have no idea (how hard it was)!"

Examples of have no idea in a Sentence

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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.

Meanwhile, patients may have no idea their information is being used as leverage. — Kurt Knutsson, FOXNews.com, 18 Oct. 2026 The smugglers are no help, Kung says, since the person arrested may be the third or fourth person to handle the creature and would have no idea of the point of origin. — Stuart Miller, Los Angeles Times, 12 Oct. 2026 Every day, he is surrounded by travelers who have no idea of the places his talents have taken him. — Noel Brennan, CBS News, 8 Oct. 2026 Mathematicians know that the proofs are true — they’re verified by a system that checks their logic — but have no idea why. — Jordana Cepelewicz, Quanta Magazine, 5 Oct. 2026 See All Example Sentences for have no idea

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“Have no idea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/have%20no%20idea. Accessed 20 Oct. 2026.

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have no idea

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have no idea

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