1
as in authoritative
being the most accurate and apparently thorough the definitive work on the attack on Pearl Harbor

Synonyms & Similar Words

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Synonym Chooser

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

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 definitive Ultimately, Il Giardino, like Radici, takes on the form of an inner narrative, an analysis, and a catharsis—an ongoing exploration of the self, without a definitive solution. Photovogue, Vogue, 21 Feb. 2025 Those artifacts proved definitive evidence of the tomb’s ownership. Paul Smaglik, Discover Magazine, 20 Feb. 2025 Welcome to Deadline’s London TV Screenings list, our definitive look at next week’s buzzy event taking Soho by storm. Jesse Whittock, Deadline, 19 Feb. 2025 The dual themes gave audiences plenty to unpack and the references mentioned here are not by any means a definitive or exhaustive list of all that was included. Kevin Dolak, The Hollywood Reporter, 10 Feb. 2025 See All Example Sentences for definitive
Recent Examples of Synonyms for definitive
Adjective
  • This was the sort of authoritative result that proves Missouri could make some noise come March.
    Brendan Marks, The Athletic, 21 Feb. 2025
  • Isbell’s authoritative vocal performance also highlighted his savvy wordplay and observations, tools that reinforced his music’s tight links with descriptive language and honest perspective.
    Bob Gendron, Chicago Tribune, 16 Feb. 2025
Adjective
  • In a new interview with Classic Rock, bassist Geddy Lee and guitarist Alex Lifeson discussed the band’s conclusive world tour, which coincided with drummer Neil Peart‘s failing health.
    Emily Zemler, Rolling Stone, 7 Jan. 2025
  • There’s simply not enough conclusive evidence to know precisely how these products influence cardiovascular health, Samantha Coogan, RDN, a nutrition sciences professor and director of the Didactic Program in Nutrition and Dietetics at the University of Nevada, Las Vegas, told Health.
    Elizabeth Yuko, Health, 11 Feb. 2025
Adjective
  • At the Department of Defense, the direction has been explicit.
    Karen Hao, The Atlantic, 22 Feb. 2025
  • But their disdain for the city has rarely been so explicit.
    Campbell Robertson, New York Times, 20 Feb. 2025
Adjective
  • Go the classic route in khaki choices from Mango, Gucci, and Citizens of Humanity.
    Laura Jackson, Vogue, 20 Feb. 2025
  • By Erica Sloan February 20, 2025 Sparkly beverages pumped with prebiotic fiber have been bubbling up for some time now, positioned both as gut-helpers and healthier alts to classic soda.
    Erica Sloan, SELF, 20 Feb. 2025
Adjective
  • Expect goals, expect drama, and if Madrid find themselves behind in the dying stages, expect to see Bellingham as the game’s decisive figure… again.
    Mark Carey, The Athletic, 18 Feb. 2025
  • But with sustainable aviation fuels costing three to four times more than traditional jet fuel, Boom faces a decisive question: Can airlines make money selling supersonic tickets while burning premium fuel?
    Jackie Snow, Quartz, 18 Feb. 2025
Adjective
  • Low-temperature whites were yellowish and warm, while high-temp whites had a definite blueish hue and were much more brilliant.
    PCMAG, PCMAG, 15 Feb. 2025
  • There has been a definite shift in mentality; Newcastle are no longer intimidated by these quality teams — or their own history.
    Chris Waugh, The Athletic, 14 Feb. 2025
Adjective
  • The presentation is a bit of a flop, but the mapo tofu is an exemplary version of the Sichuan dish, with soft, silky tofu in a deeply savory red sauce.
    Jenn Harris, Los Angeles Times, 20 Feb. 2025
  • Even the performances have an exemplary historical tenor.
    Richard Brody, The New Yorker, 20 Feb. 2025
Adjective
  • What is clear is that the offseason is now over, spring training is underway and the Yankees have done nothing to replace Torres.
    Josh Hammer, Newsweek, 17 Feb. 2025
  • The outcome of the NYPD review of the incident was not clear.
    Graham Rayman, New York Daily News, 16 Feb. 2025

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Cite this Entry

“Definitive.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/definitive. Accessed 2 Mar. 2025.

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