have no idea
idiom
1
: to not know or understand
I have no idea what you're talking about.
2
—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
Recent Examples on the Web
But it's gotten to the point now where people who have no idea about Michael and my previous work are watching the show.
—
Brenton Blanchet, PEOPLE, 10 Nov. 2025
According to Common Sense Media, three out of four kids have used an AI chatbot, and many parents have no idea.
—Erin Nicholson, Twin Cities, 6 Nov. 2025
Often the human hosts have no idea.
—NPR, 24 Oct. 2025
But the home’s residents have no idea how much personal data is being collected behind the scenes.
—Keivan Navaie, IEEE Spectrum, 22 Oct. 2025
See All Example Sentences for have no idea
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.
Brenton Blanchet, PEOPLE, 10 Nov. 2025
According to Common Sense Media, three out of four kids have used an AI chatbot, and many parents have no idea.
—Erin Nicholson, Twin Cities, 6 Nov. 2025
Often the human hosts have no idea.
—NPR, 24 Oct. 2025
But the home’s residents have no idea how much personal data is being collected behind the scenes.
—Keivan Navaie, IEEE Spectrum, 22 Oct. 2025
See All Example Sentences for have no idea
Cite this Entry
“Have no idea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/have%20no%20idea. Accessed 14 Nov. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share