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.
In this team, calling in sick for shady reasons is unacceptable. Lieke Ten Brummelhuis, Forbes, 23 Jan. 2025 Greenwashing and intentional misinformation are unacceptable, but silence from the best actors is an even bigger risk. Jesper Brodin, TIME, 23 Jan. 2025 Ryan Day’s record against Michigan dropped to 1-4 – unacceptable for Ohio State fans – and there were calls from impassioned Buckeyes fans for his firing. Jill Martin, CNN, 21 Jan. 2025 When Lizzie brushed off her behavior, her mother decided to ground her and cancel her senior trip, arguing that cheating was unacceptable. Kristen Waggoner, Newsweek, 21 Jan. 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

Dictionary Entries Near unacceptable

Cite this Entry

“Unacceptable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unacceptable. Accessed 29 Jan. 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!