insoluble

in·sol·u·ble

adj \(ˌ)in-ˈsäl-yə-bəl\

Definition of INSOLUBLE

: not soluble: as a archaic : indissoluble b : having or admitting of no solution or explanation <an insoluble problem> c : incapable of being dissolved in a liquid and especially water; also : soluble only with difficulty or to a slight degree

— in·sol·u·bil·i·ty \-ˌsäl-yə-ˈbi-lə-tē\ noun

— insoluble noun

— in·sol·u·ble·ness \-ˈsäl-yə-bəl-nəs\ noun

— in·sol·u·bly \-blē\ adverb

Examples of INSOLUBLE

1. a substance insoluble in water
2. <the seemingly insoluble mystery concerning the identity of the people who built these ancient structures>

Origin of INSOLUBLE

Middle English insolible, from Latin insolubilis, from in- + solvere to free, dissolve — more at solve

First Known Use: 14th century

Related to INSOLUBLE

Synonyms: hopeless, impossible, insolvable, insuperable, unattainable, undoable, unrealizable, unsolvable

Antonyms: achievable, attainable, doable, feasible, possible, realizable, resolvable, soluble, workable

Related Words: impracticable, impractical, infeasible, unusable, unworkable; debatable, disputable, doubtable, doubtful, dubious, far-fetched, fishy, improbable, problematic (also problematical), questionable, shady, shaky, suspect, suspicious, unfeasible, unlikely; implausible, inconceivable, incredible, unbelievable, unimaginable, unthinkable; futile, useless; absurd, fantastic (also fantastical), outlandish, preposterous, ridiculous

Near Antonyms: applicable, functional, practicable, practical, reasonable, serviceable, usable (also useable), useful, working; likely, probable; acceptable, believable, conceivable, credible, plausible

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Rhymes with INSOLUBLE

dissoluble, resoluble