Some surveys have indicated that doubts about the existence of a god were growing quickly among Americans under 30.

I thought perhaps her magic helped a little, but no more than that, and again my doubts grew stronger.

Those doubts will grow, in the public and in Congress.

Her doubts grew, though, as we waited outside the theater, reading the reviews.

However, two doubts grew on me as I read this pair of remarkable books.

My doubt grew like a sickness as we rode along.

But doubts about the young aides with whom the President surrounded himself grew quickly.

As the country waits for more information, doubts are quickly growing that full answers will emerge at all.

The good leader has his ear to the ground and will know the stage at which real doubts are growing.

If he does not assume power soon, now that the mourning period is over, those doubts will grow.