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.
But for a lot of people following Markle's every move anything other than perfection is unacceptable. Alanna Bennett, refinery29.com, 14 Mar. 2025 But this false choice that some are buying instead of fighting is unacceptable. Mark Davis, Newsweek, 14 Mar. 2025 The Biden administration had sued Denka Performance Elastomer LLC in 2023, alleging the plant had created an unacceptable risk of cancer to Black residents living nearby. Melody Petersen, Los Angeles Times, 12 Mar. 2025 Interim Kings coach Doug Christie said his team’s performance was unacceptable. Jason Anderson, Sacramento Bee, 11 Mar. 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 18 Mar. 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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