Synonyms & Antonyms of definitive

1 being the most accurate and apparently thorough
  • the definitive work on the attack on Pearl Harbor

Synonyms for definitive

Words Related to definitive

3 so clearly expressed as to leave no doubt about the meaning
  • the insurance company's definitive statement on the types of surgical operations that are covered

Synonyms for definitive

Words Related to definitive

Near Antonyms for definitive

Antonyms for definitive

See the Dictionary Definition 

Frequently Asked Questions About definitive

How is the word definitive different from other adjectives like it?

Some common synonyms of definitive are conclusive, decisive, and determinative. While all these words mean "bringing to an end," definitive applies to what is put forth as final and permanent.

the definitive biography

When is it sensible to use conclusive instead of definitive?

In some situations, the words conclusive and definitive are roughly equivalent. However, conclusive applies to reasoning or logical proof that puts an end to debate or questioning.

conclusive evidence

When is decisive a more appropriate choice than definitive?

The synonyms decisive and definitive are sometimes interchangeable, but decisive may apply to something that ends a controversy, a contest, or any uncertainty.

a decisive battle

When can determinative be used instead of definitive?

The meanings of determinative and definitive largely overlap; however, determinative adds an implication of giving a fixed character or direction.

the determinative factor in the court's decision

Learn More About definitive

Time Traveler for definitive

Time Traveler

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

See more words from the same century

Thesaurus Entries Near definitive




See More Nearby Entries 

Cite this Entry

“Definitive.” Thesaurus, Merriam-Webster, Accessed 18 May. 2022.

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

More from Merriam-Webster on definitive

Nglish: Translation of definitive for Spanish Speakers

Britannica English: Translation of definitive for Arabic Speakers


Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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