There is no doubt that she will succeed in her new role.

Despite her outward confidence, her doubtfulnesses about the plan quietly influenced every decision she made.

At the town meeting, the doubtfuls raised concerns about the project's feasibility.

Her persistent doubtings undermined the committee's confidence in the proposal.

Given the lack of evidence, his story seemed doubtful.

There is some doubt about the outcome of the experiment.

The philosopher's lecture prompted a heated debate, as students raised serious Cartesian doubts about the possibility of certain knowledge.

Despite her many accomplishments, she still wrestled with persistent self-doubts.

The jury still had reasonable doubts about the defendant's alibi despite the evidence.

Students of philosophy often begin by examining Cartesian doubt to test the foundations of knowledge.