insolubility

Lack of solubility; incapability of being dissolved.

Incapability of being solved, as a problem or a doubt; inexplicability.

The quality or state of being insoluble or not dissolvable, as in a fluid.

The quality of being inexplicable or insolvable.

The quality of being insoluble

the quality of being insoluble and difficult to dissolve in liquid

the property (of a problem or difficulty) that makes it impossible to solve