So far, they have not come up with conclusive proof.

And yet there was no conclusive proof one way or the other.

So far they have yet to come up with conclusive proof.

At best, they say, there is no conclusive proof one way or another.

So far, however, there has been no conclusive proof for this, the most likely of the three scenarios.

I stopped for a second and tried to think what my conclusive proof was.

But conclusive proof of this phenomenon has not been established.

However, no conclusive proof has been found that this is V 452.

I'll have conclusive proof all too soon that they're dangerous!

However there was no conclusive proof to support this claim.

This is probably the most substantive evidence in support of the conspiracy/sabotage theory.

But maybe she has some substantive evidence to offer.

They said that the rebels have been leveling allegations of corruption against the state government with no substantive evidence.

That's logical, given the nature of their activity, but again there isn't any substantive evidence to confirm it.

But there's nothing I can do without substantive evidence.

Scholars can't take liberties without substantive evidence or they shouldn't but students can and usually do.

It's not substantive evidence because according to you, that stuff has never been properly tested on another human.

He has never provided any substantive evidence to support his claim.

Later, the committee acquitted the judges as they could not find any substantive evidence.

The statement cannot be used as either substantive evidence of guilt or to impeach the defendant's testimony.