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Added 9 October 2026

insoluble

/ɪnˈsɒljʊbəl/ adjective

Latin root: insolūbilis Wiktionary

adjective Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about insoluble at Wordnik → Where our words come from →

(of a substance) incapable of being dissolved.
Admitting of no solution or explanation.
an insoluble doubt
Without hope of solution.
an insoluble problem

Origin

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.

From Wiktionary, via Kaikki.org (CC BY-SA)

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