insolvable
1. [ adjective ] (finance) not easily solved
Synonyms: unsolvable unresolvable unsoluble
Examples:

"an apparently insolvable problem" "public finance...had long presented problems unsolvable or at least unsolved"- C.L.Jones

Related terms: insoluble
Similar spelling:   insoluble
  insolent
  insolvent
  insolence
  insolvency
  insolently
  insolubility
  insolate
  inculpable
  in_cold_blood