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
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What was once considered a style no-no in cold weather has now become a bold statement. René Chávez Esparza, Glamour, 13 July 2025 Hanák’s film upset the authorities for seeming to show the impoverishing effects of living under Communism, a big propaganda no-no at the time. Damon Wise, Deadline, 12 July 2025 Even picking up a call and having a conversation is a huge no-no. Tim Spiers, New York Times, 11 July 2025 In his 45th start as a Tiger, Justin Verlander put the exclamation point on what would become a Hall of Fame career, throwing the franchise’s first no-hitter since 1984 (and the first no-no at home, striking out 12 and walking four on 112 pitches (73 of them strikes). Ryan Ford, Freep.com, 11 July 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 20 Jul. 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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