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:

However, it should be pointed out that the amino acids in this region are not well conserved and their functional role in vertebrates is unclear.
For example, although the proteins with the groups composed of #1-4, #7-10 and #11-14 (Table 1) are clearly related to one another, their relationship with other members of the data set are unclear.
More importantly, her assertion that the audience is unclear about Cagney's true state of mind at the end of Angels With Dirty Faces is just plain wrong.
"Unclear antecedent blockers."
The reason for the requirement of DHPC in M intermediate formation and fast proton release is unclear.