Thesaurus

unthinkable

adjective

Synonyms & Antonyms of unthinkable

too extraordinary or improbable to believe
  • to most people it seemed unthinkable that such a gentle man could be guilty of such awful crimes

Synonyms for unthinkable

Words Related to unthinkable

Phrases Synonymous with unthinkable

Near Antonyms for unthinkable

Antonyms for unthinkable

See the Dictionary Definition 

Keep scrolling for more

Learn More about unthinkable

Time Traveler for unthinkable

Time Traveler

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

See more words from the same century

Cite this Entry

“Unthinkable.” The Merriam-Webster.com Thesaurus, Merriam-Webster Inc., https://www.merriam-webster.com/thesaurus/unthinkable. Accessed 26 January 2020.

Keep scrolling for more

More from Merriam-Webster on unthinkable

Dictionary: Definition of unthinkable

Rhyming Dictionary: Words that rhyme with unthinkable

Spanish Central: Translation of unthinkable

Nglish: Translation of unthinkable for Spanish Speakers

Comments on unthinkable

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

WORD OF THE DAY

to express in a more acceptable way

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

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

TAKE THE QUIZ
Love words? Need even more definitions?

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