✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

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
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.
Anderson said some neighbors have already left indefinitely, so contractors can work, while others have no idea where to begin. Olivianna Calmes, FOXNews.com, 15 Nov. 2025 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 See All Example Sentences for have no idea

Browse Nearby Words

Cite this Entry

“Have no idea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/have%20no%20idea. Accessed 28 Nov. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!