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 

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

Thesaurus Entries Near unthinkable

untethers

unthinkable

unthinkably

See More Nearby Entries 

Cite this Entry

“Unthinkable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unthinkable. Accessed 28 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on unthinkable

Nglish: Translation of unthinkable for Spanish Speakers

WORD OF THE DAY

Test Your Vocabulary

Name That Color

  • a light greenish blue color
  • Name that color:
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!