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Already the whole project was looking doubtful.
It is doubtful whether he will survive.
Kirkwood is doubtful for tonight's match.
You still seem a bit doubtful.
He was doubtful about the accuracy of the results.
The board was doubtful that her estimates were realistic.
documents of doubtful authenticity
This is the British English definition of doubtful. View American English definition of doubtful.
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View the pronunciation for doubtful.
American English version of definition of doubtful
a Korean dish made from fermented cabbage or other vegetables, garlic and spices
to ask people to vote in order to decide an issue
a compulsive desire for something; an addiction to something
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Definition of doubtful from the online English dictionary from Macmillan Publishers Limited.