un·ac·cept·able | \ˌən-ik-ˈsep-tə-bəl, -ak-\

Definition of unacceptable 

: not acceptable : not pleasing or welcome

Keep scrolling for more

Other Words from unacceptable

unacceptability \ˌən-ik-ˌsep-tə-ˈbi-lə-tē \ noun
unacceptably \ˌən-ik-ˈsep-tə-blē \ 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

Preventing access to adequate food, basic health care and legal advice about their rights is completely unacceptable. Fox News, "Red Cross network urges end to mistreatment of migrants," 10 July 2018 Mayor Bill Ganz said Waste Management’s offer that the commission rejected Monday night was completely unacceptable. Larry Barszewski, Sun-Sentinel.com, "Two South Florida cities turn their recyclables into trash," 3 July 2018 All of this is unacceptable to Justice Sonia Sotomayor and the Supreme Court’s more liberal members. Cristian Farias, Daily Intelligencer, "The Supreme Court Continues to Chip Away at Protections for Minority Voters," 25 June 2018 The problem: During maintenance at Hill Air Force Base, maintainers discovered an unacceptable amount of corrosion where an exterior carbon fiber panel fastened to the F-35 airframe. Kyle Mizokami, Popular Mechanics, "The F-35 Is About To Get Cheaper. Now Here's the Bad News.," 12 Apr. 2018 School officials said a lacrosse player used a racial slur against a black female athlete from another school, conduct the interim superintendent later denounced as unacceptable. Melanie Burney, Philly.com, "After Haddonfield lacrosse racial slur controversy, N.J. commissions tell schools to 'redouble efforts' on bias," 25 June 2018 Most women view Leuliette's behavior as unacceptable — at home or at work, but some guys don’t see the problem, said Reiss. Jamie L. Lareau, Detroit Free Press, "Strip joints, stupidity: Boys club lingers in the car business," 14 June 2018 Her action is part of a larger movement in the United States in which everyone from small high schools to big universities and Major League Baseball teams have tweaked or dropped nicknams and mascots that were regarded as culturally unacceptable. Gary Robbins, sandiegouniontribune.com, "SDSU to keep Aztec name following racially and politically charged debate," 17 May 2018 Companies in each of these incidents accepted full responsibility and denounced prejudice as unacceptable within their companies. Aaron Randle, kansascity, "Teen 'distraught and upset' after KC-area IHOP server prints N-word on her receipt | The Kansas City Star," 2 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unacceptable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of unacceptable

15th century, in the meaning defined above

Keep scrolling for more

Learn More about unacceptable

Share unacceptable

Statistics for unacceptable

Last Updated

30 Sep 2018

Look-up Popularity

Time Traveler for unacceptable

The first known use of unacceptable was in the 15th century

See more words from the same century

Keep scrolling for more

More Definitions for unacceptable



English Language Learners Definition of unacceptable

: not pleasing or welcome : not acceptable


un·ac·cept·able | \ˌən-ik-ˈsep-tə-bəl, -ak-\

Kids Definition of unacceptable

: not pleasing or welcome : not acceptable unacceptable behavior

Keep scrolling for more

Comments on unacceptable

What made you want to look up unacceptable? Please tell us where you read or heard it (including the quote, if possible).


to reject or criticize sharply

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

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