insoluble

definition: without hope of solution
example: an insoluble problem
speech part: adjective
synonyms:
definition: (of a substance) incapable of being dissolved
example:
speech part: adjective
synonyms: indissoluble
definition: admitting of no solution or explanation
example: an insoluble doubt
speech part: adjective
synonyms:

insoluble is explained and pronounced

How insoluble is being used?