CONCLUSIVE Synonyms: 82 Similar and Opposite Words

Q: How is the word 'conclusive' different from other adjectives like it?

Some common synonyms of conclusive are decisive , definitive , and determinative . While all these words mean "bringing to an end," conclusive applies to reasoning or logical proof that puts an end to debate or questioning. // conclusive evidence

Q: When would 'decisive' be a good substitute for 'conclusive'?

The words decisive and conclusive can be used in similar contexts, but decisive may apply to something that ends a controversy, a contest, or any uncertainty. // a decisive battle

Q: When could 'definitive' be used to replace 'conclusive'?

The meanings of definitive and conclusive largely overlap; however, definitive applies to what is put forth as final and permanent. // the definitive biography

Q: When might 'determinative' be a better fit than 'conclusive'?

While in some cases nearly identical to conclusive , determinative adds an implication of giving a fixed character or direction. // the determinative factor in the court's decision

conclusive

adjective

kən-ˈklü-siv

Definition of conclusive

as in definitive

serving to put an end to all debate or questioning the archeological discovery was conclusive proof that the Vikings had indeed settled in North America around 1000 a.d.

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in convincing

having the power to persuade a conclusive argument for allowing the students to put on a play of their own choosing

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

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

Some common synonyms of conclusive are decisive, definitive, and determinative. While all these words mean "bringing to an end," conclusive applies to reasoning or logical proof that puts an end to debate or questioning.

conclusive evidence

When would decisive be a good substitute for conclusive?

The words decisive and conclusive can be used in similar contexts, but decisive may apply to something that ends a controversy, a contest, or any uncertainty.

a decisive battle

When could definitive be used to replace conclusive?

The meanings of definitive and conclusive largely overlap; however, definitive applies to what is put forth as final and permanent.

the definitive biography

When might determinative be a better fit than conclusive?

While in some cases nearly identical to conclusive, 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 conclusive Still, the final score was 31-14, a conclusive win for Ohio State, but hardly the embarrassment of Alabama-MSU. — Ian Miller Outkick, FOXNews.com, 5 Oct. 2026 And likewise, the evidence against attachment isn’t conclusive. — Pascal Vrticka, Scientific American, 4 Oct. 2026 Study Has Limitations The study’s results haven’t yet been peer-reviewed or published in a medical journal, which means the findings can’t be considered conclusive. — Emily Kay Votruba, EverydayHealth.com, 30 Sep. 2026 Despite the pitch of the cliff wall, Parrack found no conclusive evidence of where Bernadette had struck it. — Chris Spargo, PEOPLE, 22 Sep. 2026 See All Example Sentences for conclusive

Recent Examples of Synonyms for conclusive

Adjective

And definitive explanations for Bonfire and Dynamite aren’t forthcoming.

— Robin George Andrews, Scientific American, 20 Oct. 2026
The oil-rich province of Alberta has rejected the pathway to secession and will remain part of Canada, landing a definitive blow to a fringe but loud campaign which sought support from the US.

— Max Saltman, CNN Money, 20 Oct. 2026

Definition of definitive

Adjective

The show doesn’t mount a convincing case that there is more to him than that.

— Jerry Saltz, Vulture, 16 Oct. 2026
Be suspicious of unexpected security alerts A real cybersecurity incident gives scammers an opportunity to send convincing fake breach notifications.

— Kurt Knutsson, FOXNews.com, 16 Oct. 2026

Definition of convincing

Adjective

Brandon McElroy, who founded the nonprofit Green Air Solutions to lead the fight against J7, said in an interview that the denial was a decisive win.

— Elizabeth Campbell, Fort Worth Star-Telegram, 22 Oct. 2026
Despite Paolo Banchero’s 35 points, 10 assists and seven rebounds against the Hawks, the Magic had 20 turnovers and shot 1-of-12 from 3-point range in the decisive fourth quarter.

— Mike Bianchi, The Orlando Sentinel, 22 Oct. 2026

Definition of decisive

Adjective

Kendall Jenner and Hunter Schafer, in Valentino and Prada, respectively, wore two of the evening’s most compelling arguments for black and white evening attire.

— José Criales-Unzueta, Vanity Fair, 18 Oct. 2026
Fielder started in the realm of absurdist comedy, and with the Holmes project moves into a world of watercooler high crimes and compelling fourth-wall breaking.

— Matt Donnelly, Variety, 17 Oct. 2026

Definition of compelling

Adjective

One flight last week leaving from al-Qassim airport north of Riyadh to Geneva, sold for €94,000 ($105,000), compared with a price of about €60,000 ($67,000) before the closure of the main airport in Riyadh.

— Melissa Hancock, Fortune, 21 Oct. 2026
As of last week, Moore is calling offensive plays for the Cougars, and the team has also made a change at quarterback.

— Shaun Goodwin, Idaho Statesman, 21 Oct. 2026

Definition of last

Adjective

But zest was one of just two strengths (the other is hope) that had the strongest relationship to mental well-being across countries and age groups.

— Joan M. Cook, Time, 17 Oct. 2026
However, some safety advocates and Senator Maria Cantwell want a stronger federal review process.

— Aamir Khollam, Interesting Engineering, 17 Oct. 2026

Definition of strong

Adjective

That experience is backed up by research and investigations in various states, which make clear that voting by noncitizens is extremely rare.

— Arkansas Online, Arkansas Online, 18 Oct. 2026
Unequivocally condemn these acts of violence and issue a clear appeal for every mobilization to be peaceful.

— Tyler Speicher, FOXNews.com, 18 Oct. 2026

Definition of clear

Adjective

At the end of the day, elite talent — such as the Oilers possess in McDavid, Leon Draisaitl and Evan Bouchard — is what is determinative in the NHL.

— Thomas Drance, New York Times, 2 Oct. 2026
The order of the presidential calendar is consequential, but far from determinative.

— Los Angeles Times, Los Angeles Times, 2 Aug. 2026

Definition of determinative

Browse Nearby Words

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conclusive

conclusively

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“Conclusive.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/conclusive. Accessed 23 Oct. 2026.

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Synonyms of conclusive

adjective

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