con·​clu·​sive | \kən-ˈklü-siv, -ziv\

Definition of conclusive 

1 : of, relating to, or being a conclusion

2 : putting an end to debate or question especially by reason of irrefutability The results were not conclusive.

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Other Words from conclusive

conclusively adverb
conclusiveness noun

Synonyms & Antonyms for conclusive


absolute, clear, deciding, decisive, definitive, last


inconclusive, indecisive, unclear

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Choose the Right Synonym for conclusive

conclusive, decisive, determinative, definitive mean bringing to an end. conclusive applies to reasoning or logical proof that puts an end to debate or questioning. conclusive evidence decisive may apply to something that ends a controversy, a contest, or any uncertainty. a decisive battle determinative adds an implication of giving a fixed character or direction. the determinative factor in the court's decision definitive applies to what is put forth as final and permanent. the definitive biography

Examples of conclusive in a Sentence

the archeological discovery was conclusive proof that the Vikings had indeed settled in North America around 1000 A.D. a conclusive argument for allowing the students to put on a play of their own choosing

Recent Examples on the Web

Animal studies have shown no conclusive harm to the fetus, but one 2105 review of opioids and pregnancy published in the Journal of Pediatric Genetics concluded that the drugs might be associated with certain birth defects. Hayley Krischer, Marie Claire, "How Heroin Came for Middle-Class Moms," 20 Aug. 2018 But one study is hardly conclusive evidence, and along with small sample size the study is also hindered by relying on self-reporting, which is often highly unreliable. Emily Dreyfuss, WIRED, "Do Thundershirts Really Calm Dogs During Fireworks or What?," 3 July 2018 Another 61 are suspected of being looted, and research on many more is not yet conclusive enough to rule out Nazi theft. New York Times, "French and Swiss Museums to Share a Cézanne With a Murky Past," 3 July 2018 Despite the lack of conclusive details on Yongbyon’s operations, the report raises questions over whether Kim has taken steps to curb North Korea’s nuclear program since the June 12 summit. Brian Murphy,, "Satellite imagery suggests ‘rapid’ upgrades at North Korea nuclear site, monitoring group says," 27 June 2018 However, a conclusive cause for the crash has not been determined. Stephanie Petit,, "Teen Rolls Free of Fiery Detroit Plane Crash That Killed Dad and Stepmother: 'It Was a Miracle'," 26 June 2018 Kane did not have his ankle scanned on Monday, as had been planned, as a result of the area around the joint being too swollen to provide a conclusive determination., "Fernando Llorente Set to Leave Tottenham As Spurs Look to Erik Lamela Following Harry Kane's Injury," 13 Mar. 2018 While Chloe's pediatrician hasn't made a conclusive determination as to what caused the reaction, Kapetanovic told that she was referred to a specialist for a further examination that will hopefully reveal some answers. Caroline Picard, Good Housekeeping, "Mom Issues Warning About Teething Gel After Her Daughter Nearly Died," 13 Mar. 2018 In the Democratic Party, this year’s primary results have been less conclusive. Sean Sullivan, The Seattle Times, "Trump’s choice and a liberal favorite win Florida gubernatorial nominations," 28 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'conclusive.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of conclusive

1536, in the meaning defined at sense 1

History and Etymology for conclusive

see conclude

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Last Updated

3 Dec 2018

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Time Traveler for conclusive

The first known use of conclusive was in 1536

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More Definitions for conclusive



English Language Learners Definition of conclusive

: showing that something is certainly true


con·​clu·​sive | \kən-ˈklü-siv \

Kids Definition of conclusive

: decisive sense 1 Police found conclusive evidence.

Other Words from conclusive

conclusively adverb This conclusively proves her innocence.



Legal Definition of conclusive 

1 : of, relating to, or being a conclusion

2 : putting an end to debate or question especially by reason of inability to be refuted

Other Words from conclusive

conclusively adverb
conclusiveness noun

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