doubtful

Yet it is not the predominant views of the experts but the views of a minority, mostly of rather doubtful standing in their profession, which are taken up and spread by the intellectuals.

The pupils of her great eyes were large in the doubtful lamplight, swallowing their green fires in deep pools of mystery and darkness.

They had their lists of Liberals and of the doubtfuls who still remained doubtful. As the election drew near, the force of the whole organization was turned upon these unrepentant doubtfuls.

One thing remains doubtful.

I'm doubtful about what I ought to do.

It is doubtful whether Bill will come.