unacceptable

adjective

ˌən-ik-ˈsep-tə-bəl How to pronounce unacceptable (audio)
Definition of unacceptablenext
as in wrong
falling short of a standard this work is entirely unacceptable

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

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.
Recent Examples of unacceptable The economic and military costs of the war are becoming unacceptable. — Richard Haass, Foreign Affairs, 23 Sep. 2026 In one place, a behavior is permissible or even encouraged, while in another, that same behavior is unacceptable and has negative consequences. — Dr. Monika Sumra, Forbes.com, 22 Sep. 2026 Laying an egg against the Raiders in Year 3 of the Harbaugh era is unacceptable. — Alejandro Avila Outkick, FOXNews.com, 21 Sep. 2026 After monitoring the situation, park managers found the bear unusually difficult to scare away and said its escalating proximity to humans posed a safety risk that was deemed unacceptable, according to the national park. — Megan Fahrney, ABC News, 16 Sep. 2026 See All Example Sentences for unacceptable
Recent Examples of Synonyms for unacceptable
  1. wrong
  2. poor
  3. lame
  4. bad
  5. horrible
  6. terrible
  7. deficient
  8. awful
Adjective
  • British police acknowledged applying for the warrants under the wrong statutory provision, the judge said while stipulating that the misconduct investigation against the king's brother could continue.
    — Steve Hendrix, Washington Post, 8 Oct. 2026
  • Doctors in Tennessee and Republican state senators called for the state to pause executions, because the chances of one going catastrophically wrong were so high.
    — Maya Foa, Chicago Tribune, 8 Oct. 2026
Definition of wrong
Adjective
  • Such diagnoses can carry an extraordinarily poor neonatal prognosis.
    — Arkansas Online, Arkansas Online, 3 Oct. 2026
  • Road accidents are frequent in Africa’s most populous country, in part due to poor road conditions and lax enforcement of traffic laws.
    — ABC News, ABC News, 3 Oct. 2026
Definition of poor
Adjective
  • Blumenthal hopes to see action on KOSA in the lame-duck session.
    — Lisa Hagen, Hartford Courant, 2 Oct. 2026
  • Only to see them, after winning elections, get strong-armed by the party, then offer lame excuses as to why.
    — Colleen Kujawa, Chicago Tribune, 2 Oct. 2026
Definition of lame
Adjective
  • But then came the nightmare of Game 3, one of the Sox’s worst performances in weeks.
    — Paul Sullivan, Chicago Tribune, 9 Oct. 2026
  • Specifically, people with worse fever tended to have more of a protein called flagellin in their systems than those with little to no fever.
    — Jackie Flynn Mogensen, Scientific American, 9 Oct. 2026
Definition of bad
Adjective
  • Hill is a free agent after a horrible injury suffered last season.
    — Pete Grathoff, Kansas City Star, 5 Oct. 2026
  • Ashley Flynn’s sister, Kayla Keyt, said during her victim statement that her family could not overcome their sense of shock and despair after learning that Flynn betrayed them in such a violent and horrible way.
    — Alicia Victoria Lozano, NBC news, 5 Oct. 2026
Definition of horrible
Adjective
  • Platforms prefill a name, email and phone number so a user can submit in one tap without leaving the feed, which is wonderful for a consumer promotion and terrible for a six-figure investment.
    — Jonathan Durante, Forbes.com, 5 Oct. 2026
  • Saddled with terrible reviews and negative word-of-mouth, Tom Cruise‘s absurdist dark comedy has cratered at the box office with $8 million in North America and $20 million globally in its first weekend of release.
    — Rebecca Rubin, Variety, 5 Oct. 2026
Definition of terrible
Adjective
  • To help with hair regrowth, Bauman often recommends nutrient-dense meals rich with protein, healthy fat and the trace minerals that, when deficient, can lead to hair loss.
    — Maggie Ryan, Flow Space, 2 Oct. 2026
  • Of course, supplementing with vitamin D is especially helpful for those who are deficient.
    — Nicole Catanese, InStyle, 25 Sep. 2026
Definition of deficient
Adjective
  • He was held back by something else, a feeling that some awful truth about his familiar, beloved world was now being revealed to him.
    — Rachel Heng, New Yorker, 4 Oct. 2026
  • His death was already sudden and awful, and the call was jarring and unexpected.
    — Heidi Stevens, Chicago Tribune, 2 Oct. 2026
Definition of awful

Browse Nearby Words

unacceptability
unacceptable
unacceptably
See all Nearby Words

Cite this Entry

“Unacceptable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unacceptable. Accessed 9 Oct. 2026.

Copy Citation
Love words? Need even more definitions?

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

Last Updated: - Updated example sentences

Popular in Grammar & Usage

See More

Do You Need a New Language Peeve?

The Exceptions of '-s' and '-es' Plurals

Merriam-Webster’s Great Big List of Words You Love to Hate

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?
See More

Popular in Wordplay

See More

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

7 Words for Bad Endings and Rough Situations

The Words of the Week - Oct. 9

Even More Bird Names that Sound Like Insults (and Sometimes Are)
See More

Popular

See More

Do You Need a New Language Peeve?

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
a cup of tea and a golf ball on tee side by side
Quiz: Sounds Like... Choose the word that sounds like it fits the clue...
See All