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.
And sending in ground troops would, of course, be unacceptable to most Americans and would severely hurt the Republicans in the upcoming midterm Congressional elections and even the 2028 presidential election. Peter Lucas, Boston Herald, 14 Mar. 2026 Europe and Canada have long considered the prospect of depending on China for those resources to pose an unacceptable risk. Rogé Karma, The Atlantic, 13 Mar. 2026 There have also been reports that some migrants are being held at the processing center longer than ICE policy allows, something Veasey called unacceptable. Marissa Armas, CBS News, 10 Mar. 2026 Government actions have an important symbolic value and show that authorities deem violence against women unacceptable, said Isadora Vianna, a sociology researcher from Rio de Janeiro State University. Eléonore Hughes, Los Angeles Times, 9 Mar. 2026 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

Browse Nearby Words

Cite this Entry

“Unacceptable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unacceptable. Accessed 16 Mar. 2026.

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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