The jewel-case is a conclusive proof that he did stand there….
Koch recognised the jewel-case and gave the name of the owner, who proved conclusively that it was his.
Raskolnikov had unwittingly worked a revolution in his brain on a certain point and had made up his mind for him conclusively.
The mother’s face lighted up with ecstatic happiness at the sight of this conclusive unspoken reconciliation.
And do you suppose, from the character of our legal system, that they will accept, or that they are in a position to accept, this fact—resting simply on a psychological impossibility—as irrefutable and conclusively breaking down the circumstantial evidence for the prosecution?
In those still ambiguous words he kept eagerly looking for something more definite and conclusive.
As he was reaching the steps of Bakaleyev’s, he suddenly fancied that something, a chain, a stud or even a bit of paper in which they had been wrapped with the old woman’s handwriting on it, might somehow have slipped out and been lost in some crack, and then might suddenly turn up as unexpected, conclusive evidence against him.
There are no more uses of "conclusive" in the book.