Conclusive vs Proven - What's the difference?
As an adjective conclusive
is pertaining to a conclusion.
As a verb proven is
Pertaining to a conclusion
Providing an end to something; decisive.
- The set of premises of a valid argument is conclusive in the sense that no further evidence could possibly be added to the set of premises which would make the argument invalid.
Having been proved; having proved its value or truth.
- It's a proven fact that morphine is a more effective painkiller than acetaminophen is.
- Mass lexical comparison is not a proven method for demonstrating relationships between languages.
* (having been proved) unproven
As the past participle of prove, proven is often discouraged, with proved preferred – “have proved” rather than “have proven”. However, today in everyday use they are both used, about equally.
Historically, proved'' is the older form, while proven''' arose as a Scottish variant – see . Used in legal writing from mid 17th century, it entered literary usage more slowly, only becoming significant in the 19th century, with the poet among the earliest frequent users (presumably for reasons of meter). In the 19th century, '''proven was widely discouraged, and remained significantly less common through the mid 20th century (''proved being used approximately four times as often), by the late 20th century it came to be used about equally.
As an attributive adjective, proven is much more commonly used, and proved is widely considered an error – “a proven method”, not *“a proved method”.