Meanings
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1
adj
without hope of solution
An insoluble problem.
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2
adj
admitting of no solution or explanation
An insoluble doubt.
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3
adj
That cannot be dissolved.
Petroleum is largely insoluble in water.
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4
adj
That cannot be solved.
The reason Fisher concluded that the problem is likely insoluble is that the ability of real-world agents to act on new perceived opportunities of arbitrage – including those that turn out to be incorrect – makes stability impossible to demonstrate without additional strong (and unrealistic) assumptions.
Thesaurus
Etymology
From Middle English insolible, from Middle French insoluble, from Latin insolūbilis, from in- + solūbilis. Piecewise doublet of insolvable and unsolvable. By surface analysis, in- + soluble.