unanswered
adj.not having an answer or a response. You use this for questions that nobody has replied to or problems that have not been solved.
adj.not replied to or resolved. Often describes questions, prayers, or challenges that remain without a corresponding reaction or solution.
“Her last three emails remain unanswered.”
“The detective was frustrated because several key questions about the night of the crime were still unanswered.”
“Despite decades of intensive research and significant funding, the fundamental question of how life first began on Earth remains largely unanswered by the scientific community.”
Often follows linking verbs like 'remain', 'stay', or 'be'.
Usage unanswered questions
“The mountain of unanswered questions around his finances and judgment is only getting bigger.”
“They argued Davis believed the attack on his nephew could not "go unanswered".”