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.
The Rockies haven't been held hitless since the Dodgers' Clayton Kershaw fired a no-no in an 8-0 victory on June 18, 2014. Field Level Media, Reuters, 9 Sep. 2025 And then Ritter, after breaking up the no-no, was removed in the ninth inning after rolling his ankle diving back into second base. Kyle Newman, Denver Post, 9 Sep. 2025 Bleaching cleaning products, abrasive powders, and scouring pads are a no-no that ruin countertops. Brandee Gruener, Southern Living, 4 Sep. 2025 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 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 18 Sep. 2025.

Kids Definition

no-no

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

More from Merriam-Webster on no-no

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