in·​sol·​u·​ble | \ (ˌ)in-ˈsäl-yə-bəl How to pronounce insoluble (audio) \

Definition of insoluble

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

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Other Words from insoluble

insolubility \ (ˌ)in-​ˌsäl-​yə-​ˈbi-​lə-​tē How to pronounce insolubility (audio) \ noun
insoluble noun
insolubleness \ (ˌ)in-​ˈsäl-​yə-​bəl-​nəs How to pronounce insolubleness (audio) \ noun
insolubly \ (ˌ)in-​ˈsäl-​yə-​blē How to pronounce insolubly (audio) \ adverb

Examples of insoluble in a Sentence

a substance insoluble in water the seemingly insoluble mystery concerning the identity of the people who built these ancient structures
Recent Examples on the Web Allulose passes through our system largely intact, Tewksbury says, sort of like insoluble fiber. Carolyn L. Todd, SELF, "Allulose Is a New Kind of Sugar That Doesn't Count as Sugar," 24 Jan. 2020 For those in the movement to democratize the Labour Party, this was an insoluble dilemma. David Graeber, The New York Review of Books, "The Center Blows Itself Up: Care and Spite in the ‘Brexit Election’," 13 Jan. 2020 At least try to scarf down something high in fat, insoluble fiber, or protein, says Fisher. Lindzi Wessel, Popular Science, "How to maintain a buzz without getting drunk," 30 Dec. 2019 These mysteries are insoluble in precisely the same way that the war was inexplicable. Rumaan Alam, The New Republic, "Patrick Modiano Explains Himself," 16 Dec. 2019 If your days are spent treating patients suffering from the most insoluble chronic conditions, a pain conference can feel like a holiday. The Economist, "Will there ever be a cure for chronic pain?," 20 Sep. 2019 Flaxseed fiber aids digestion Flaxseed contains both soluble fiber and insoluble fiber. Cynthia Sass, Mph,, "10 Health Benefits of Flaxseed, According to a Nutritionist," 22 Oct. 2019 Flaxseed also contains both insoluble and soluble fiber, a nutrient that's key for feeling satiated and keeping things regular in the bathroom. SELF, "19 Healthy, High-Fat Foods to Keep You Full and Satisfied," 8 Aug. 2019 There are two types of fiber: soluble, which dissolves in water to create a gelish substance, and insoluble, which doesn’t break down at all. Carolyn L. Todd, SELF, "How Much Fiber Should I Be Eating to Feel Regular?," 30 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'insoluble.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of insoluble

14th century, in the meaning defined above

History and Etymology for insoluble

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

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Time Traveler for insoluble

Time Traveler

The first known use of insoluble was in the 14th century

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Statistics for insoluble

Last Updated

1 Feb 2020

Cite this Entry

“Insoluble.” Dictionary, Merriam-Webster, Accessed 18 Feb. 2020.

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More Definitions for insoluble


How to pronounce insoluble (audio)

English Language Learners Definition of insoluble

formal : not able to be solved or explained
technical : not able to be dissolved in a liquid


in·​sol·​u·​ble | \ in-ˈsäl-yə-bəl How to pronounce insoluble (audio) \

Kids Definition of insoluble

1 : having no solution or explanation an insoluble problem
2 : difficult or impossible to dissolve insoluble in water


in·​sol·​u·​ble | \ (ˈ)in-ˈsäl-yə-bəl How to pronounce insoluble (audio) \

Medical Definition of insoluble

: incapable of being dissolved in a liquid also : soluble only with difficulty or to a slight degree

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More from Merriam-Webster on insoluble

Thesaurus: All synonyms and antonyms for insoluble

Rhyming Dictionary: Words that rhyme with insoluble

Spanish Central: Translation of insoluble

Nglish: Translation of insoluble for Spanish Speakers

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