His scepticism had been replaced by a growing interest in what they were doing, and it was she, now, who felt doubtful.

I felt suddenly doubtful of the truth of my own story.

She enjoyed herself, although she had felt a little doubtful of it.

Even your own man Hebert admits to feeling doubtful on the point.

If you are beginning to feel a little confused or doubtful, don't be embarrassed.

When he heard this, Oliver felt rather doubtful about having such a friend.

Robert, who remembered how silent the lonely house could be, felt doubtful.

Originally relieved at the mention of a party, he now again felt slightly doubtful.

If Caroline had heard that remark she would have felt doubtful about the fun.

I suppose he followed me here, but I feel doubtful about that.