insoluble -
admitting of no solution or explanation; "an insoluble doubt"
soluble (of a substance) capable of being dissolved in some solvent (usually water)
inexplicable,
incomprehensible incapable of being explained or accounted for; "inexplicable errors"; "left the house at three in the morning for inexplicable reasons"
insoluble -
(of a substance) incapable of being dissolved
soluble (of a substance) capable of being dissolved in some solvent (usually water)
insoluble -
without hope of solution; "an insoluble problem"
hopeless (informal to emphasize how bad it is) beyond hope of management or reform; "she handed me a hopeless jumble of papers"; "he is a hopeless romantic"
