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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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American English version of definition of doubtful
used with other nouns to describe the unexpected and often unwanted effects of a particular situation or trend
the bone at the front of your lower leg, between your knee and your ankle. A more usual word is...
a woman in middle age who has to juggle caring for teenage children and ageing parents with a career
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Definition of doubtful from the online English dictionary from Macmillan Publishers Limited.