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.
Hayden had used vibrato like a pop singer, a no-no, apparently, when doing the classics. Charlie Mason, TVLine, 10 Feb. 2025 Co-sleeping with your baby is also considered a no-no. Robin Abcarian Los Angeles Times, arkansasonline.com, 9 Feb. 2025 Secured area or no, pre-singing blank prescription forms is a no-no. David J. Neal, Miami Herald, 7 Feb. 2025 Which we’ve been told for four years is a big no-no. Stewart Mandel, The Athletic, 22 Jan. 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

Dictionary Entries Near no-no

Cite this Entry

“No-no.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/no-no. Accessed 14 Feb. 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

Last Updated: - Updated example sentences
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