Exact Match:
- insoluble
- without hope of solution; "an insoluble problem"
- (of a substance) incapable of being dissolved
- admitting of no solution or explanation; "an insoluble doubt"
Synonyms:
- coherent,
- cohesive,
- enwrapped in mystery,
- impartible,
- indefinable,
- indiscerptible,
- indissoluble,
- indissolvable,
- indivisible,
- inexplicable,
- inextricable,
- infrangible,
- infusible,
- inseparable,
- insolvable,
- mysterious,
- mystic,
- unaccountable,
- undefinable,
- undividable,
- unexplainable,
- unified,
- uninterpretable,
- unsolvable