plural no-no's or no-nos
1
: something unacceptable or forbidden
2

Examples of no-no 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.
So the red bucket and cleaning pads in the ware washing area handwash sink counts as a no-no. David J. Neal updated August 22, Miami Herald, 22 Aug. 2025 Dems have spent nearly 40 years committed to the cause of statehood for the District, a constitutional no-no that is still irresistible to them for the promise of three Electoral College votes, two new senators and another seat in the House that would all be blue in perpetuity. Chris Stirewalt, The Hill, 12 Aug. 2025 Scherzer has thrown two no-hitters to Kershaw’s single no-no. Dan Freedman, Forbes.com, 11 Aug. 2025 Similarly to hardwoods, using a highly acidic product like vinegar on waxed furniture is a big no-no. Lauren Wicks, Southern Living, 6 Aug. 2025 See All Example Sentences for no-no

Word History

First Known Use

circa 1942, in the meaning defined at sense 1

Time Traveler
The first known use of no-no was circa 1942

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Cite this Entry

“No-no.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/no-no. Accessed 4 Sep. 2025.

Kids Definition

no-no

noun
ˈnō-ˌnō
plural no-no's or no-nos
: something that is unacceptable or forbidden

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