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:

Equally doubtful.
It is doubtful that in conversation he would ever remark, “Up early ...”
Given the steady decline in the personal saving rate, it is doubtful that Americans would willingly reduce consumption so much that the nation would be at risk of saving too much.
The Articles of Confederation explicitly stated that revision required the consent of every state, but the Philadelphia conventioneers, doubtful they'd achieve unanimity, lowered the threshold to nine of 13 states--on no authority but their own say-so.
In this particular case, it is doubtful that anyone reading The Times is unaware of the meaning of American ass . Another alternative, not always possible, is to avoid entirely the passage containing the problem word or phrase.