"We're doing away with any seed of doubt this time."

Ray thought he saw a chance to plant a small seed of doubt.

She felt a small seed of doubt begin to grow within her.

But even as he thought the words, a seed of doubt came to him.

He had managed to plant a small seed of doubt.

The best we can hope to do is to plant some seeds of doubt.

That story planted a seed of doubt in my mind.

And it wasn't I who put that seed of doubt in her mind.

His family sticks by him, but some seeds of doubt are shown.

So you, in fact, put a seed of doubt into our minds as to whether that support would last.