Now when he saw his friend and heard him speak, his doubt vanished.

He saw her doubt and all mirth vanished from his expression.

Any doubt about maintaining his own arousal vanished in that moment.

Initial doubts as to whether or not this was the expected invasion soon vanished.

And when it came to war, then his doubts vanished.

Then I saw the way he treated your client, and all doubts vanished.

Any doubts about the truth of his claims and intentions vanished.

Then he'd seen her across the airport lobby, and all doubt had vanished on the instant.

Once again her doubts vanished but she knew they'd be back.

Now as the picture grew even less certain in his mind, the doubt vanished.