unacceptable

adjective

un·​ac·​cept·​able ˌən-ik-ˈsep-tə-bəl How to pronounce unacceptable (audio)
-ak-
Synonyms of unacceptablenext
: 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.
Not speaking out equals resignation, and that's just unacceptable. Ryan Morik, FOXNews.com, 10 Dec. 2025 Lizza alleged that Nuzzi had an affair with another profile subject and had offered Kennedy political advice—activities widely viewed as unacceptable for journalists. Gabe Whisnant, MSNBC Newsweek, 5 Dec. 2025 Against a team with that many weapons, that’s unacceptable. Nick Harris, Fort Worth Star-Telegram, 5 Dec. 2025 Furthermore, his cowardice in the face of Israel’s genocide in Gaza is utterly unacceptable. Ross O'Keefe, The Washington Examiner, 4 Dec. 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 14 Dec. 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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