They came up with some good guesses, he said, but no definitive evidence.

The experience of the British police does provide relevant though not definitive evidence.

Perhaps it is because public health groups do not find the evidence definitive enough to start a public education campaign.

There was not one piece of definitive evidence that you had taken morphine.

However, there is no definitive evidence that his death was from murder, suicide, or simply illness.

We have no definitive and certain evidence about either future possibility, but the smart money would seem to be on doing the right thing.

Other researchers are not so certain that the type of definitive evidence many archaeologists demand will ever be found.

However, there is no definitive evidence on the subject.

No definitive evidence exists for the church, however, before the 9th century.

No definitive evidence as to which is the right candidate exists.