unacceptable

adjective

un·​ac·​cept·​able ˌən-ik-ˈsep-tə-bəl How to pronounce unacceptable (audio)
-ak-
: not acceptable : not pleasing or welcome
unacceptability noun
unacceptably adverb

Examples of unacceptable in a Sentence

a word that is unacceptable in formal English Some of her ideas were unacceptable to other people.
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.
The first project yields too many false positives, introducing an unacceptable amount of friction into the consumer experience. Shazia Manus, Forbes.com, 23 May 2025 But violence, vandalism or destruction of property are completely unacceptable. Nick Mordowanec, MSNBC Newsweek, 21 May 2025 But Humane Society officials insist any cut over $1 million is unacceptable and will prompt the nonprofit to stop providing service to the city. David Garrick, San Diego Union-Tribune, 21 May 2025 That would be untenable — something unacceptable to any nation. Ben Sales, Sun Sentinel, 20 May 2025 See All Example Sentences for unacceptable

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of unacceptable was in the 15th century

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Cite this Entry

“Unacceptable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unacceptable. Accessed 28 May. 2025.

Kids Definition

unacceptable

adjective
un·​ac·​cept·​able ˌən-ik-ˈsep-tə-bəl How to pronounce unacceptable (audio)
-ak-
: not acceptable : not pleasing or welcome
unacceptably adverb

More from Merriam-Webster on unacceptable

Last Updated: - Updated example sentences
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