As long as she helped him keep his doubts at bay, he would never give her up.

Yet, as the guide, he would have to keep his doubts to himself.

Two months later, he seems to be willing to overlook that same concern, or at least keep his doubts to himself.

And if anyone among the teachers thought differently, they were keeping their doubts to themselves.

Deets was not so sure they would get there anyway, but he kept his doubts to himself.

She kept her doubts about the team leader to herself.

You keep your doubts to yourself, or you cast them on the French.

Blade kept his doubts about the future to himself.

Cade wasn't convinced but he kept his doubts to himself.

I just hope we never find out, Darian thought, keeping his doubts to himself.