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.
Bill Owens, the show’s former EP, resigned after CBS named Susan Zirinsky to a role overseeing standards for all of CBS News, including 60 Minutes, in what was seen as an unacceptable change in long-standing protocol. Alex Weprin, HollywoodReporter, 6 Oct. 2025 Another unacceptable, unforced [error]. Saajan Jogia, MSNBC Newsweek, 6 Oct. 2025 Other Republicans — especially in the House — see it as an unacceptable expansion of President Barack Obama’s signature health care law, which Republicans have tried to eliminate or cut back since it was enacted 15 years ago. Preston Fore, Fortune, 2 Oct. 2025 But agreeing to keep the government open without getting something in return appeared to be unacceptable to most of them. New York Times, 1 Oct. 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 Oct. 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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