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.
At a news conference called by Arenas shortly before the committee meeting, Arenas said the deaths of children in the county’s care are unacceptable. Julia Prodis Sulek, Mercury News, 24 Apr. 2026 In December 2025, the TEA announced the state would take over the district after the Marilyn Miller Language Academy campus earned its fifth consecutive unacceptable accountability rating in the 2024-2025 school year. Briauna Brown, CBS News, 23 Apr. 2026 Not ready for prime time Amazon’s Prime Video losing its feed in overtime of the Charlotte Hornets-Miami Heat play-in game was unacceptable for a streaming network that deems itself big time. Paul Sullivan, Chicago Tribune, 19 Apr. 2026 Today's sentence sends a clear message that this conduct is unacceptable and carries significant consequences. Zoey Lyttle, PEOPLE, 16 Apr. 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

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Cite this Entry

“Unacceptable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unacceptable. Accessed 24 Apr. 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

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