unsolvable

/ʌnˈsɑːlvəbəl/
adjective
  1. Not able to be solved; having no solution.
    • The mystery seemed unsolvable until a new witness came forward.
    • Some math problems are unsolvable with current knowledge.
    • They argued that the conflict was unsolvable through negotiation alone.
What does "unsolvable" mean? | whatsthatwordmean | whatsthatwordmean