Unsoluble

//ʌnˈsɒljʊbəl// adj

Definitions

Adjective
  1. 1
    Archaic form of insoluble. alt-of, archaic

    "The new fulminate consists of a mixture of chlorate of potash, with the prussiates, soluble or unsoluble, the hyposulphites, the hypophosphites, the phosphides, the amorphous phosphorus, alone or combined."

Adjective
  1. 1
    not easily solved wordnet

Etymology

From un- + soluble.

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