Polls indicate that the public has grown more doubtful about that science.

Meanwhile, the Allies grew doubtful, waiting for the Japanese to respond.

He considered the situation for a moment, then grew doubtful.

Of a sudden her face grew doubtful and troubled, like to that of one who has just received some hurt.

He and his wife had hoped to reclaim their house this summer, but they are growing more doubtful.

Some federal law enforcement officials said they were growing doubtful that the letter would prove to be contaminated.

But his allies and servants were growing doubtful.

Like the rest of society, it has grown doubtful of the hopes and claims for drugs.

The guard grew doubtful and even more curious.

But a quarter of the way to my destination, I grew doubtful.