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

Examples of no-no in a Sentence

Recent Examples on the Web
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Using it as storage for buckets and other equipment is a no-no. David J. Neal, Miami Herald, 24 Apr. 2026 Stilettos are a no-no when walking around any large city, but platforms will pull your spring outfits together with more comfort. Alexandra Pereira, Travel + Leisure, 23 Apr. 2026 Milk and Dairy We have all probably stored milk or other dairy items, including soft cheeses, in the fridge door at one time or another, but food safety experts say this is a no-no. Bridget Shirvell, Martha Stewart, 19 Apr. 2026 Araiza, McKnight and Russell each took an inning to close out the no-no. Kirk Kenney, San Diego Union-Tribune, 8 Apr. 2026 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 26 Apr. 2026.

Kids Definition

no-no

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

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