Definition of doubtful:

1. Doubtfully.
2. DOUBTFULNESS.
3. Not settled in opinion; uncertain; ambiguous, or not clear in meaning; admitting of doubt; of uncertain issue; suspicious; not confident; not clearly defined.

Common misspellings for doubtful:

doughtful, doudful.

Examples of usage for doubtful:

1. It's very doubtful if anybody would want me now- except those who knew me when I was young." – The Devil's Garden by W. B. Maxwell

2. If he was a man I was doubtful of, I would only give him the amount he had at his credit, but he might get that full amount at whatever time he asked for it. – Second Shetland Truck System Report by William Guthrie

3. " Well, I should judge it might be fairly doubtful was the reply of the man he was speaking with. – Somehow Good by William de Morgan

Quotes for doubtful:

1. The tendency of modern scientific teaching is to neglect the great books, to lay far too much stress upon relatively unimportant modern work, and to present masses of detail of doubtful truth and questionable weight in such a way as to obscure principles.

2. I knew it to be very doubtful whether the Cabinet, Parliament, and the country would take this view on the outbreak of war, and through the whole of this week I had in view the probable contingency that we should not decide at the critical moment to support France.

3. I put forward formless and unresolved notions, as do those who publish doubtful questions to debate in the schools, not to establish the truth but to seek it.

4. And we've become very doubtful of our information sources, because they're all controlled by these huge multilateral corporations.

5. Are we a Christian nation now? It's doubtful. But did we start out as one? Without question.