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.
Best Overall: Pattern Beauty Courtesy of brand Pattern The Hair Steamer $169 Ulta $169 Pattern Beauty Original video by Glamour tester Jamie Wilson In the past using a hair steamer at home was a no-no and best left to the salon professionals. Jamie Wilson, Glamour, 16 Jan. 2025 Wearing White While the strict wedding dress code rules of old don't always apply these days (black, for instance, is no longer a total no-no), any shade of white remains off the table. Betsy Cribb Watson, Southern Living, 16 Jan. 2025 Overall, while the flavor profiles were totally different, none were overwhelmingly bitter or acidic—a big no-no in my book. Alaina Chou, Bon Appétit, 1 Jan. 2025 Over the decades, the coins — and people sitting on the marble edge of the fountain (another definite no-no) — have contributed to its wear and tear, especially as visitor numbers have risen sharply in recent years. Elisabetta Povoledo, New York Times, 1 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 25 Jan. 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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