Words similar to unsolved

Example sentences for: unsolved

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

And then there is the unsolved 19-year-old murder case of Hogan's Heroes star Bob Crane.
The reason for the clearance of circulating cells immediately following IL-2 administration remains unsolved, and may be related to their sequestration in the reticular endothelial system, a hypothesis that could not be evaluated by this study.
Sacks' informed curiosity about the causes of the disease (which might hold a clue to the unsolved mysteries surrounding its Western relatives) is hardly separable from his affection for the plant.
Question about that: Just as papers routinely appeal to citizens to provide information they might have about unsolved crimes or fugitives, why doesn't the LAT invite readers who think they've been mistreated by the officers in question to come forward?
Investigators are looking to see if the crime has any connection to two unsolved 1997 Atlanta clinic bombings.