Words similar to unclear

Example sentences for: unclear

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

Thus, the mechanisms through which local and systemic IL-4 administration are able to suppress CIA are still unclear.
In summary, it is unclear how much each additional dollar of government saving will ultimately increase national saving.
How he reached that figure remains unclear.
It was unclear whether or not closer adherence to the diet by the non-responders would have resulted in better success.
Although search frequency increased, the quality of students' medical searches was unclear.