doubtfulness

But he says, “I used the doubtfulness of other people to build a fire and prove them wrong.”

That early vote of doubtfulness still burns a little.

There was too much doubtfulness in what he was doing.

It was with much dissatisfaction at this doubtfulness of his guide that the doctor helped the driver slide out the stretcher.

The quality or state of being ambiguous; doubtfulness or uncertainty, particularly as to the signification of language, arising from its admitting of more than one meaning; an equivocal word or expression.