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.
And sometimes the soldiers can do things which are totally unacceptable and can be called crimes. Isaac Chotiner, New Yorker, 6 June 2025 Tools that pose an unacceptable threat to rights or safety are banned outright. Dan Fitzpatrick, Forbes.com, 5 June 2025 Shamkhani underscored that the absence of sanctions relief rendered the U.S. plan unacceptable. Amir Daftari, MSNBC Newsweek, 5 June 2025 One of our department’s core values is respect, and Coach O’Sullivan’s unacceptable actions failed to demonstrate that. Scott Thompson, FOXNews.com, 3 June 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 10 Jun. 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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