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.
The unexpected adverse media campaign that was launched by those who resigned on 24 March 2025 has caused incalculable damage and offers a glimpse of the unacceptable behaviors displayed in private. Simon Perry, People.com, 5 Aug. 2025 While Led Zeppelin would have benefited greatly from Reid’s singing, songwriting and distinctive guitar work, being in that barnstorming band would have placed unacceptable artistic restraints on him. George Varga, San Diego Union-Tribune, 5 Aug. 2025 The school’s fifth unacceptable rating came in the state’s A-F accountability ratings for 2023, which the Texas Education Agency released last spring after a two-year court battle. Silas Allen, Fort Worth Star-Telegram, 4 Aug. 2025 This outdoor cooling station, intended to provide a space for the homeless and others without adequate air conditioning to beat the heat, was condemned almost immediately by residents, a council member and the mayor as unacceptable. Briah Lumpkins, Charlotte Observer, 1 Aug. 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

Browse Nearby Words

Cite this Entry

“Unacceptable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unacceptable. Accessed 19 Aug. 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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!