unsolvable
US /ʌnˈsɑːl.və.bəl/
UK /ʌnˈsɑːl.və.bəl/
1.
غير قابل للحل
If a problem, difficulty, or mystery is unsolvable, it is not possible to find a solution to it or the cause of it:
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Without further funds, this is an almost unsolvable problem.