- The definition of conclusive is something that puts an end to arguments or that definitively proves something or ends dispute.
If there is debate over life on other planets and an alien shows up and tells everyone on earth that there is life on other planets, this visit is an example of conclusive evidence of life on other planets.
Origin: Late Latin conclusivus ; from past participle of Classical Latin concludere, conclude
Used by arrangement with John Wiley & Sons, Inc.
- con·cluˈsive·ly adverb
- con·cluˈsive·ness noun