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 The Last of Us’s New Beginning Right on cue, HBO’s adaptation arrives at the source material’s definitive spoiler — and its most controversial. Joe Reid, Vulture, 20 Apr. 2025 The response sounded definitive and official, and the user did not suspect that Sam was not human. ArsTechnica, 17 Apr. 2025 But the study authors, and other experts, remain cautious and have not declared a definitive discovery of life beyond our planet. Ashley Strickland, CNN Money, 17 Apr. 2025 No definitive death penalty ruling Wyandotte County District Attorney Mark Dupree had urged Klapper not to rule on the death penalty. Jonathan Shorman, Kansas City Star, 17 Apr. 2025 See All Example Sentences for definitive
Recent Examples of Synonyms for definitive
Adjective
  • In this authoritative, elegant biography, Daut meticulously combs the torrents of contemporary letters and broadsheets to draw a complex, contradictory portrait of Christophe, also known as King Henry.
    Foreign Affairs, Foreign Affairs, 22 Apr. 2025
  • The distant therapist Not too long ago, therapists acted like black boxes and authoritative gods.
    David E. Tolchinsky, The Conversation, 17 Apr. 2025
Adjective
  • Both the Centers for Disease Control and Prevention and the National Institutes of Health concur that there is conclusive evidence that alcohol causes several types of cancer.
    Pranoti Mandrekar, The Conversation, 7 Apr. 2025
  • Anecdotes from such sources are, of course, far from conclusive.
    Miles Klee, Rolling Stone, 8 Mar. 2025
Adjective
  • Norris steps out of the aisle and appears to direct two other men in, though no explicit order could be heard.
    Kinsey Crowley, USA Today, 23 Apr. 2025
  • Yes, there will be other shows — and, in fact, Star Wars is coming off its most successful year in producing TV shows with less explicit, fan-service-y connection to the movies, though The Acolyte was canceled and the future of Skeleton Crew remains in doubt.
    Jesse Hassenger, Vulture, 23 Apr. 2025
Adjective
  • Undercut Pixie While Halle Berry has the most classic look, 2010s Rihanna endorsed the pompadour, contrast cut version of pixies.
    Essence, Essence, 21 Apr. 2025
  • The outdoor sofa is the most commanding piece in the Roundabout furniture set from Neighbor, which has the look of classic wicker, with a few modern updates (color variations, metal frames, and all-weather durability).
    Blake Bakkila, Architectural Digest, 21 Apr. 2025
Adjective
  • And, in fact, Democrats are winning special elections month after month after month, including most recently a decisive one in Wisconsin earlier this month for the state Supreme Court.
    Isabel Danzis, ABC News, 20 Apr. 2025
  • That’s exactly what WWE fans got inside Allegiant Stadium, with a short but sweet bout that ended in decisive fashion when Cargill demolished Naomi with a massive Jaded finisher.
    Blake Oestriecher, Forbes.com, 20 Apr. 2025
Adjective
  • Call me crazy, but there’s a definite pulp feel to all the prison scenes and sets, too.
    Andy Andersen, Vulture, 18 Apr. 2025
  • For everything else, pause until there is more clarity – Effective leaders are realistic about their ability to set a definite plan in the early days of tariffs.
    John M. Bremen, Forbes.com, 17 Apr. 2025
Adjective
  • Mexico has many must-see attractions—jungles, cathedrals, ancient temples, and mighty beaches—and its archeology and scenery are exemplary, and its food and nightlife legendary.
    Alex Ledsom, Forbes.com, 17 Apr. 2025
  • This creation from Spanish luxury fashion house Loewe is exemplary of former creative director Jonathan Anderson’s penchant for infusing sophistication and whimsy into the brand’s designs.
    Hali Bey Ramdene, Bon Appetit Magazine, 17 Apr. 2025
Adjective
  • The series’ take on the subscription-service economy is clear from the first episode.
    Emma Stefansky, The Atlantic, 17 Apr. 2025
  • The email should be approximately 250 words, maintain a confident but not technical tone, emphasize the business benefits rather than technical specifications, and include a clear call to action for scheduling a demo.
    Caroline Castrillon, Forbes.com, 17 Apr. 2025

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Cite this Entry

“Definitive.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/definitive. Accessed 27 Apr. 2025.

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