conclusive

adj. /kənˈkluːsɪv/ C1

结论性的；确凿的

Proving that something is true beyond doubt.

仙境例句

The Queen said the crumbs on the Knave's coat were conclusive, but the King was not sure.

王后说红桃杰克衣服上的碎屑就是确凿的证据，可国王还拿不准。