unsolved
/ʌnˈsɑlvd/ adjective B2- Not yet solved. · an unsolved crime· an unsolved crossword puzzle
From the library
As long as all these questions were unsolved, I felt that sleep would be no easy matter, either for Holmes or myself.
No unsolved crime had been reported from that district.
My mother is only astonished that you remain so long unsolved.
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