Thesaurus

impossible

adjective

Synonyms & Antonyms of impossible

See the Dictionary Definition 

Learn More About impossible

Time Traveler for impossible

Time Traveler

The first known use of impossible was in the 14th century

See more words from the same century

Thesaurus Entries Near impossible

impositions

impossible

impossibly

See More Nearby Entries 

Cite this Entry

“Impossible.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impossible. Accessed 22 May. 2022.

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

More from Merriam-Webster on impossible

Nglish: Translation of impossible for Spanish Speakers

Britannica English: Translation of impossible for Arabic Speakers

WORD OF THE DAY

Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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!