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
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.
And while technique matters (dry shaving is a big no-no), your post-shower routine could also be partly to blame. Emma-Jade Stoddart, Glamour, 5 July 2026 Slippage or strain during extended wear is a big no-no for the designer. Lily Templeton, Footwear News, 2 July 2026 Invasive Plants Speaking of privacy screens, invasive plants like bamboo are a no-no. Brandee Gruener, Southern Living, 30 June 2026 The most obvious comp is that Disney couldn’t buy Fox’s TV networks because doing so would’ve saddled Disney with two broadcast networks, ABC and Fox, and that’s a big regulatory no-no. Brian Welk, IndieWire, 18 June 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

Browse Nearby Words

Cite this Entry

“No-no.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/no-no. Accessed 7 Jul. 2026.

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster