circumstantial evidence
indirect evidence

Decisions about its value are therefore based on indirect evidence.

But the indirect evidence does seem to point in that direction.

We can use the indirect evidence to suggest where to look directly.

And yet there is much good indirect evidence that this building does have a foundation.

We must rely on indirect evidence, since none of us goes above.

This type of indirect evidence can play a significant role in helping us decide what really happened.

Indirect evidence suggests that he may have died before his son became emperor in 98.

"More indirect evidence, although I suspect we've already seen enough."

We'll have to cast around for indirect evidence that he didn't intend to leave.

It was an intellectual conviction based on indirect evidence alone.