Words similar to doubtful

Example sentences for: doubtful

How can you use “doubtful” in a sentence? Here are some example sentences to help you improve your vocabulary:

If a lesion was considered a putative precancer (even when the evidence seemed doubtful), it was added to the taxonomy.
It seems doubtful that Disneyland would carry on this tradition.
It is doubtful that using adjusted costs would change the nature of the results obtained.
My larger point is that it's doubtful we'll escape formulas--especially with executives and would-be screenwriters flocking to courses by Robert McKee and others.
Some smart First Amendment lawyers who are doubtful about other parts of McCain-Feingold think this kind of soft-money ban is also OK.